서울대학교 도서관은 DDC(Dewey Decimal Classification, 듀이십진 분류법)에 따라 자료를 분류하고 배열합니다.
300 Social Sciences
330 Economics
331 Labor economics
332 Financial economics
333 Economics of land & energy
334 Cooperatives
335 Socialism & related systems
336 Public finance
337 International economics
338 Production
339 Macroeconomics & related topics
630 Agriculture
630 Agriculture & related technologies
631 Specific techniques; apparatus, equipment, materials
632 Plant injuries, diseases, pests
633 Field & plantation crops
634 Orchards, fruits, forestry
635 Garden crops (Horticulture)
636 Animal husbandry
637 Processing dairy & related products
638 Insect culture
639 Hunting, fishing, conservation, related technologies
도서는 책등에 표시된 청구기호순으로 배열되어 있습니다. 청구기호의 구성은 다음과 같습니다.