Soil Survey manual
U. S. Department of Agriculture
Soil Survey manual - New Delhi 1966 - 503p - Its handbook no. 18 .
SOIL - SURVEYS -- HANDBOOKS, MANUALS, ETC
SOIL - SURVEYS -- HANDBOOKS, MANUALS, ETC
631.47 U-4S
Soil Survey manual - New Delhi 1966 - 503p - Its handbook no. 18 .
SOIL - SURVEYS -- HANDBOOKS, MANUALS, ETC
SOIL - SURVEYS -- HANDBOOKS, MANUALS, ETC
631.47 U-4S