United States, Department Of Agriculture, Soil Survey Staff : Soil Survey Manual
United States, Department Of Agriculture, Soil Survey Staff : Soil Survey Manual
- Washington United States Department of Agriculture 1966
- vii, 503p.
- U.S. Dept. Agri. Handbook No. 18 .
J:1g
J:1g / J6
J:1g
J:1g / J6