TY - GEN T1 - Drought tolerance in rice and varietal screening [microform]. A1 - Yang, Chien-Nan 1943- LA - English PP - Quezon City PB - Photoduplication Service, University of the Philippines Library YR - 1977 UL - https://tuklas.up.edu.ph/Record/UP-99796217606347329 NO - Microfilmed with 12 other titles. KW - Soil moisture. KW - Plants : Drought resistance. ER -