000 - Computer science, information, general works 45,976 Ver registros 020 - Library and information sciences 14,465 Ver registros 030 - General encyclopedic works 4,722 Ver registros 080 - General collections 4,632 Ver registros 070 - Documentary, educational, news media; journalism 3,338 Ver registros 050 - General serial publications 2,644 Ver registros 060 - General organizations and museology 2,637 Ver registros 090 - Manuscripts, rare books 1,694 Ver registros 010 - Bibliography 1,601 Ver registros 040 - [Unassigned] 134 Ver registros 300 - Social sciences 27 Ver registros 510 - Mathematics 6 Ver registros 650 - Management and auxiliary services 5 Ver registros 820 - English & Old English literatures 3 Ver registros 330 - Economics 2 Ver registros 340 - Law 2 Ver registros 620 - Engineering and allied operations 2 Ver registros 800 - Literature (Belles-lettres) and rhetoric 2 Ver registros 360 - Social problems and services; associations 1 Ver registros 370 - Education 1 Ver registros 570 - Biology 1 Ver registros 740 - Graphic arts and decorative arts 1 Ver registros 790 - Recreational and performing arts 1 Ver registros 810 - American literature in English 1 Ver registros