TY  - SER
AU  - Wyman, Henry C.,
TI  - Soil Conservation Vol. 42(6-9), Vol. 43(1-12)
U1  - 631.4505 
PY  - 1977///-78
CY  - Washington
PB  - Soil Conservation Service, U. S. Department of Agriculture
KW  - Soil Conservation
KW  - Soil Science
ER  -