TY  - BOOK
AU  - Stallings, J.H.
TI  - Soil conservation
T2  - Prentice-Hall field crop production series
U1  - 631.45 21st ed.
PY  - 1957///
CY  - New Jersey
PB  - Prentice-Hall
KW  - Soil conservation
N1  - foreword by R.B. Alderfer
ER  -