First ed. published in 1916 by the Classification Division of the Library of Congress, under title: Classification. Class D: Universal and Old World history. "Additions and changes to July 1965": 55 p ...

Rev. ed. of: Classification. Class C. Auxiliary sciences of history. 4th ed. 1993.

The ESA Panel on Vegetation Classification was constituted in 1994 by the Ecological Society of America to support and facilitate the creation of standardized, scientifically credible North American ...

Work on a comprehensive National Vegetation Classification began in the early 1990s, when the Ecology Department of The Nature Conservancy (now with NatureServe), the Ecological Society of America ...