TY  - GEN
AU  - Leon,J.
AU  - Leon,J.
TI  - Handbook of plant introduction in tropical crops
AV  - SB111.F62.ASno.93.1974 
PY  - 1974///
CY  - Rome : 
PB  - FAO, 
KW  - Tropical crops
KW  - Handbooks, manuals, etc
N1  - FAO agriculture studies  no. 93
ER  -