Abcdefghjklmn general Works

B-BD Philosophy

BF Psychology

BH-BJ Ethics

BL-BX Religion

History (Archaeology, Genealogy)

CS Genealogy

CT Biography

History (General and Old World History)

History (General U.S.)

History (Local U.S., Canada, Mexico, South America)

F175-190 Maryland History

G-GF Geography, Oceanography

GN-GT Anthropology, Folklore

GV Recreation, Physical Education, Dance

H General Social Sciences

HA Statistics

HB-HC Economics

HD Land, Agriculture, Industry

HE Transportation and Communication

HF Commerce

HG Finance

HJ Public Finance

HM-HX Sociology

HX Socialism, Communism, Anarchism

Political Science

Law

Education

LT Teaching Materials

NA Architecture

NC Drawing, Design, Illustration

ND Painting

NE Print Media

NK Decorative Arts, Crafts

P Philology and Linguistics

PA Classical Language and Literature

PB-PH Modern European Languages

PJ-PK Oriental, Language and Literature

PL Eastern Asia, Africa, Oceania Languages & Literature

PM American Indian Language and Literature

PN Literary History, Performing Arts

PQ French, Italian, Spanish, Portuguese Literature (Romance Literature)

PR English Literature

PS American Literature

PT Germanic Literature

Q General Science

QA Mathematics

QA76 Computer Science

QB Astronomy

QC Physics

QD Chemistry

QE Geology

QH Natural History

QK Botany

QL Zoology

QM Human Anatomy

QP Physiology

QR Microbiology

RA Public Aspects of Medicine

RB Pathology

RC Internal Medicine

RM Therapeutics, Pharmacology

RT Nursing

TA-TK Construction, Engineering

TL Motor Vehicles, Aeronautics

TN Mining, Metallurgy

TR Photography

TS Manufacturing

TT Handicrafts, Arts and Crafts

TX Home Economics