TY  - BOOK
AU  - Gustafson,A.F.
TI  - Using and managing soils
T2  - McGraw-Hill rural activities series
AV  - S591 .G92
U1  - 631.4 
PY  - 1948///]
CY  - New York
PB  - McGraw-Hill Book Co.
KW  - Soils
KW  - Fertilizers
N1  - "List of visual aids":  p. 399-405
ER  -