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