TY  - BOOK
AU  - Piper,Charles V.
TI  - Agricultural varieties of the cowpea and immediately related species
T2  - United States. Department of Agriculture. Bureau of Plant Industry. Bulletin
AV  - QK1 .U45 no. 229
PY  - 1912///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Cowpea
ER  -