TY  - BOOK
AU  - Piper,Charles V.
AU  - Brown,Edgar
TI  - The production of hairy vetch seed
T2  - U.S. Dept. of agriculture. Bureau of plant industry. Circular
AV  - SB19 .A33 no. 102
PY  - 1915///
CY  - Washington
PB  - Govt. print. off.
KW  - Vetch
ER  -