00531nam a2200145Ia 4500008004100000082002800041245012400069260004500193650001800238650001900256650003000275650002900305650002900334650002200363220204s9999    xx            000 0 und d  a575:631.52:061.3bRRI;1 0aProceedings of the National Symposium on new trends in crop improvement of perennial species, August 30, 1990, Kottayam  aKottayambRRII, Division of Botanyc1990  aCrop breeding  aHevea breeding  aHevea genetic improvement  aHevea genetic parameters  aHevea hybrid correlation  aRubber prepotency