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