Classification by Dewey Trivia Quiz

From 000 to 099, the Dewey Classification System covers 'Computer science, information and general works'. This is broken down into ten subdivisions (which are in turn also divided into more specific subjects).

000-009: Computer science, knowledge and systems
010-019: Bibliographies
020-029: Library and information sciences
030-039: Encyclopedias and books of facts
040-049: Unassigned (formerly Biographies)
050-059: Magazines, journals and serials
060-069: Associations, organizations and museums
070-079: News media, journalism and publishing
080-089: Quotations
090-099: Manuscripts and rare books

The chosen example book title, "Libraries and Google" (2005) by William Miller, falls within the more precise subcategory 020.2854678 - Library and Information Sciences > Library Science > Miscellany > Digital Librarianship, Library 2.0 > Computer Applications.

'Philosophy & psychology' is found within the 100-199 range, with subdivisions as follows:

100-109: Philosophy
110-119: Metaphysics
120-129: Epistemology
130-139: Parapsychology and occultism
140-149: Philosophical schools of thought
150-159: Psychology
160-169: Philosophical logic
170-179: Ethics
180-189: Ancient, medieval, and Eastern philosophy
190-199: Modern Western philosophy (19th-century, 20th-century)

Sigmund Freud's "On Dreams" (1901) is an abridged version of his 1899 work "The Interpretation of Dreams". In its more precise classification, "On Dreams" is numbered 150.1952 - Psychology > Theory And Instruction > Systems, schools, viewpoints > Psychoanalytic systems > Freudian system.

Class 200 extends up to 299 and covers anything that smacks of religion, albeit with an apparent disproportionate focus on Christianity:

200-209: Religion
210-219: Philosophy and theory of religion
220-229: The Bible
230-239: Christianity
240-249: Christian practice and observance
250-259: Christian orders and local church
260-269: Social and ecclesiastical theology
270-279: History of Christianity
280-289: Christian denominations
290-299: Other religions

"Basic Judaism" (1947) by Milton Steinberg certainly falls within the final subcategory of Religion, with a more defined subcategory of 296.0 - Other religions > Judaism.

In Dewey's classification, the social sciences are divided into the following subcategories:

300-309: Social sciences, sociology and anthropology
310-319: Statistics
320-329: Political science
330-339: Economics
340-349: Law
350-359: Public administration and military science
360-369: Social problems and social services
370-379: Education
380-389: Commerce, communications and transportation
390-399: Customs, etiquette and folklore

Harry Hodge's 1984 anthology "Famous Trials" covered nine trials involving murder and treason, chosen from his series of "Famous Trials" books published between 1941 and 1955. The narrowed focus of the subject falls within the following subcategory: 345.4102523 - Law > Criminal Law > Europe > British Isles -- Ireland & Scotland > Crimes > Offenses against persons > Homicide > Murder.

The category of 'Language' seems pretty self-explanatory, ranging from language as a general subject to exploration of specific languages. The subcategories presented are as follows:

400-409: Language
410-419: Linguistics
420-429: English and Old English languages
430-439: German and related languages
440-449: French and related languages
450-459: Italian, Romanian and related languages
460-469: Spanish, Portuguese, Galician
470-479: Latin and Italic languages
480-489: Classical and modern Greek languages
490-499: Other languages

"Lexical Semantics" (1986) by D.A. Cruze is about the meaning of words, which puts it squarely within 412.0 - Linguistics > Etymology.

The 2013 update of the Dewey Decimal Classification (DDC 23) simplified this category from 'Natural sciences and mathematics' to just 'Science' with the following main subcategories:

500-509: Science
510-519: Mathematics
520-529: Astronomy
530-539: Physics
540-549: Chemistry
550-559: Earth sciences and geology
560-569: Fossils and prehistoric life
570-579: Biology
580-589: Plants
590-599: Animals (Zoology)

As you probably surmised, P.W. Atkins' book "Molecules" fits nicely into the 'Chemistry' subcategory of 'Science' with the number 547.1 - Chemistry > Organic > Cyanogen and its compounds.

Class 600 of the Dewey Decimal System moves into scientific application with the category title of 'Technology', broken down into these subcategories:

600-609: Technology
610-619: Medicine and health
620-629: Engineering
630-639: Agriculture
640-649: Home and family management
650-659: Management and public relations
660-669: Chemical engineering
670-679: Manufacturing
680-689: Manufacture for specific uses
690-699: Construction of buildings

Your book clue for 'Technology' was "The Art of Electronics" (1980) by Paul Horowitz (and Winfield Hill). It falls within the 'Engineering' subcategory with the number 621.381 - Engineering > Engineering and allied operations > Applied physics > Electrical, magnetic, optical, communications, computer engineering; electronics, lighting > Electronics, communications engineering > Electronics.

Between 700 and 799, Melvil Dewey categorized all of the finer, aesthetic things in life in the following subtopics:

700-709: Arts
710-719: Area planning and landscape architecture
720-729: Architecture
730-739: Sculpture, ceramics and metalwork
740-749: Graphic arts and decorative arts
750-759: Painting
760-769: Printmaking and prints
770-779: Photography, computer art, film, video
780-789: Music
790-799: Outline of sports, games and entertainment

As part of the well-known series of self-help books, Winslow Yerxa put together a wealth of information to be able to learn to play "Harmonica for Dummies" (2014). In the Dewey Decimal System, it falls under 788.82193 - Music > Wind Instruments > Woodwinds in general.

The 'Literature' category follows a similar subcategory scheme as 'Language', which makes a lot of sense, when you stop to think about it. Here is how Dewey broke it down:

800-809: Literature, rhetoric and criticism
810-819: American literature in English
820-829: English and Old English literatures
830-839: German and related literatures
840-849: French and related literatures
850-859: Italian, Romanian and related literatures
860-869: Spanish, Portuguese, Galician literatures
870-879: Latin and Italic literatures
880-889: Classical and modern Greek literatures
890-899: Other literatures

"The Poems of Hesiod" was published by R.M. Frazer in 1983 with the simple description, "Besides Homer, there is Hesiod." This puts the book squarely within the 'Classical and modern Greek literatures' subcategory with the number 881.01 - Greek Classical poetry > Different categories of Greek classical poetry > Philosophy and Theory.

The final subcategory of the Dewey Decimal System (900-999) covers all of 'History & geography'. This pairing of subject areas is broken down as follows:

900-909: History
910-919: Geography and travel
920-929: Biography and genealogy
930-939: History of ancient world (to c. 499)
940-949: History of Europe
950-959: History of Asia
960-969: History of Africa
970-979: History of North America
980-989: History of South America
990-999: History of other areas

Bill Bryson explores the great country of Australia in his 2000 travelogue "In a Sunburned Country". Where to go to find this book in the library is under number 919.40465 - Geography and Travel > Pacific and Polar Regions > Australia.