USDA Hardiness zone map
Autor:
Henry M. Cathey while Director, U.S. National Arboretum, Agricultural Research Service, U.S. Department of Agriculture, Washington, DC 20002
- Edited, formatted and prepared for the US National Arboretum web site by Ramon Jordan, March 1998 & Revised March 2001
- Special thanks to Jody Shuart and Scott Bauer, ARS Information Staff
Credit:
USDA plant hardiness zone map 1990 (USDA Miscellaneous Publication No. 1475) ISBN: 0160187478, USDA website
Krótki link:
źródło:
Wymiary:
4014 x 4002 Pixel (6212038 Bytes)
Opis:
USDA Hardiness Zones in North America.
Albers equal area projection, standard parallels of 29.5°N and 45.5°N, scale 1 : 6,000,000 (approx.)
Licencja:
Public domain
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