Time period from 1901 through 2000 of the common era.
History, 19th Century
Time period from 1801 through 1900 of the common era.
History, 21st Century
Time period from 2001 through 2100 of the common era.
Allergy and Immunology
A medical specialty concerned with the hypersensitivity of the individual to foreign substances and protection from the resultant infection or disorder.
Violation of laws, regulations, or professional standards.
The biological science concerned with the life-supporting properties, functions, and processes of living organisms or their parts.
Encyclopedias as Topic
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)
Methods for quantitatively assessing and measuring interpersonal and group relationships.
The study of those aspects of energy and matter in terms of elementary principles and laws. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Biography as Topic
A written account of a person's life and the branch of literature concerned with the lives of people. (Harrod's Librarians' Glossary, 7th ed)
Palatal Expansion Technique
An orthodontic method used for correcting narrow or collapsed maxillary arches and functional cross-bite. (From Jablonski's Dictionary of Dentistry),
A general class of ortho-dihydroxyphenylalkylamines derived from tyrosine.