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)
History, 20th Century
Time period from 1901 through 2000 of the common era.
History, 19th Century
Time period from 1801 through 1900 of the common era.
MedlinePlus
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.
Anthropology
The science devoted to the comparative study of man.
Tomography, X-Ray Computed
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
History, 17th Century
Time period from 1601 through 1700 of the common era.