TY - BOOK AU - Leon, Jeorge., ed. TI - Guidelines for seed exchange and plant introduction in tropical crops T2 - FAO Plant Production and Protection Paper, no.76 U1 - 632.913.1(213) M6 PY - 1986/// CY - Rome PB - FAO KW - A.Withers Lyndsey KW - Edited by Jeorge Leon and Lyndsey A.Withers. KW - Plant pathology,Seed exchange ER -