The use of agricultural soil maps and the status of agricultural soil mapping in the United States : presented at the twenty-eighth annual meeting 1948
Engineering use of agricultural soil maps
Annual meeting. Highway Research Board ; 28 ; 1948 ; Washington, DC Annual meeting. Highway Research Board ; 28 (Washington, DC) : 1948.
1949
III, 128 S., [3] Faltbl
graph. Darst., Kt
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