TY - BOOK AU - Nazeer M.A. AU - George P.J. AU - Marattukalam J.G. AU - Premakumari D. TI - Evaluation of certain primary and secondary Hevea clones in large scale trial PY - 1991/// PB - Placrosym VIII, 1988, Cochin, India. Journal of Plantation Crops, 18 (Supplement): 11-16. KW - Clone KW - Clone evaluation KW - Primary clone ER -