Library Of Congress Combined Classification Index

Q-ScienceR-MedicineS-AgricultureT-TechnologyU -MilitaryV-Naval

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Q

Q

Science (General)

QA

Mathematics

QB

Astronomy

QC

Physics

QD

Chemistry (General)

QE

Geology

QH

Natural History & Biology

QK

Botany

QL

Zoology

QM

Human Anatomy

QP

Physiology

QR

Microbiology

R

R

Medicine (General)

RA

Public Aspects of Health

RB

Pathology

RC

Internal Medicine & Practice of Medicine

RD

Surgery

RE

Ophthalmology

RF

Otorhinolaryngology

RG

Gynecology & Obstetrics

RJ

Pediatrics

RK

Dentistry

RL

Dermatology

RM

Therapeutics & Pharmacology

RS

Pharmacy & Materia Medica

RT

Nursing

RV

Botanic, Thomsonian, & Eclectic Medicine

RX

Homeopathy

RZ

Other

S

S

Agriculture (General)

SB

Plant Culture

SD

Forestry

SF

Animal Culture

SH

Aquaculture, Fisheries, & Angling

SK

Hunting

T

T

Technology (General)

TA

Engineering (General) & Civil Engineering

TC

Hydraulic Engineering

TD

Environmental Technology & Sanitary Engineering

TE

Highway Engineering

TF

Railroad Engineering and Operation

TG

Bridge Engineering

TH

Building Construction

TJ

Mechanical Engineering & Machinery

TK

Electrical Engineering, Electronics, & Nuclear Engineering

TL

Motor Vehicles, Aeronautics, & Astronautics

TN

Mining Engineering & Metallurgy

TP

Chemical Engineering Technology

TR

Photography

TS

Manufactures

TT

Handicrafts & Arts and Crafts

TX

Home Economics

U

U

MilitaryScience (General)

UA

Armies: Organization, Description, Facilities, etc.

UB

Military Administration

UC

Maintenance & Transportation

UD

Infantry

UE

Cavalry. Armored & Mechanized Cavalry

UF

Artillery

UG

Military Engineering, Air Forces & Air Warfare (General)

UH

Other Services

V

V

Naval Science (General)

VA

Navies: Organization, Description, Facilities, etc.

VB

Naval Administration

VC

Naval Maintenance

VD

Naval Seaman

VE

Marines

VF

Naval Ordnance

VG

Minor Services of Navies

VK

Navigation & Merchant Marine

VM

Naval Architecture, Shipbuilding, & Marine Engineering

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