TY  - BOOK
AU  - Leâon,J.
TI  - Handbook of plant introduction in tropical crops / 
PY  - 1974///
CY  - Rome : 
PB  - Food and Agriculture Organization of the United Nations , 
KW  - Plant introduction
KW  - Handbooks, manuals, etc
KW  - Germplasm resources
KW  - Tropics
KW  - Tropical crops
N1  -  Includes bibliographical references
ER  -