Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to main content
National Library of Medicine logo

Classification 2025 Summer Edition

Worldwide source of medical classification resources

Class Index

non-alpha A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

General
QL 737.R666
As disease vectors
As laboratory animals
Diseases
SF 997.5.R3
See also Rodent Control
Specific topics by subject
See also Free Radicals
See also Oxidative Stress
Children with learning disabilities
LC 4704.87
Education (General)
LB 1050 - LB 1050.75
Mentally disabled children
LC 4620
Psychology
BF 456.R2
See also Dyslexia