Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)
Time period from 1901 through 2000 of the common era.
Time period from 1801 through 1900 of the common era.
NATIONAL LIBRARY OF MEDICINE service for health professionals and consumers. It links extensive information from the National Institutes of Health and other reviewed sources of information on specific diseases and conditions.
The science devoted to the comparative study of man.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Time period from 1601 through 1700 of the common era.