Classification
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572 - Biochemistry
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
618 - Gynecology, obstetrics, pediatrics & geriatrics
2
628 - Sanitary & municipal engineering
2
636 - Animal husbandry
2
650 - Management & auxiliary services
2
690 - Buildings
2
745 - Decorative arts
2
003 - Systems
1
011 - Bibliographies
1
040 - [Unassigned]
1
061 - Organizations in North America
1
174 - Occupational ethics
1
305 - Social groups
1
342 - Constitutional & administrative law
1
343 - Military, tax, trade & industrial law
1
344 - Labor, social, education & cultural law
1
345 - Criminal law
1
346 - Private law
1
350 - Public administration & military science
1
352 - General considerations of public administration
1
355 - Military science
1
360 - Social problems & services; associations
1
364 - Criminology
1
538 - Magnetism
1
542 - Techniques, equipment & materials
1
553 - Economic geology
1
577 - Ecology
1
579 - Microorganisms, fungi & algae
1
629 - Other branches of engineering
1
664 - Food technology
1
674 - Lumber processing, wood products & cork
1
780 - Music
1
791 - Public performances
1
910 - Geography & travel
1