TY  - BOOK
AU  - Letteer,C.R.
TI  - Experiments in crop production on fallow land at San Antonio
AV  - S21 .A7 no. 151
PY  - 1914///
CY  - Washington, D.C.
PB  - U.S. Dept. of Agriculture
KW  - Fallowing
KW  - Field experiments
KW  - Texas
KW  - San Antonio
N1  - Contribution from the Bureau of Plant Industry
ER  -