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Número de Clasificación Autor Tópico Género Región Época

A - General Works 742 B - Philosophy, Psychology, Religion 12,814 C - Historical Sciences 954 D - World History 4,001 E - United States History 660 F - General American History 4,630 G - Geography, Anthropology, Recreation 5,343 H - Social Science 30,163 J - Political Science 7,016 K - Law 12,196 L - Education 12,075 M - Music 1,686 N - Fine Arts 3,301 P - Language and Literature 19,552 Q - Science 9,871 R - Medicine 10,768 S - Agriculture 4,482 T - Technology 8,800 U - Military Science 344 V - Naval Science 53 Z - Library Science 1,530

TK - Electrical and Nuclear Engineering 1,574 T - General Technology 1,266 TA - General and Civil Engineering 1,209 TP - Chemical Technology 1,127 TX - Home Economics 766 TD - Environmental Technology 552 TS - Manufactures 436 TJ - Mechanical Engineering and Machinery 426 TH - Building Construction 411 TR - Photography 286 TL - Motor Vehicles and Aeronautics 232 TN - Mining Engineering and Metallurgy 190 TT - Arts and Crafts 169 TC - Hydraulic and Ocean Engineering 91 TE - Highway Engineering 27 TG - Bridge Engineering 19 TF - Railroad Engineering and Operation 18