TY - BOOK AU - M A PETER AU - Dr. C M GEORGE TI - COMPARATIVE STUDIES ON THE GROWTH, YIELD AND QUALITY OF FOUR HIGH YIELDING RICE VARIETIES (Aswathi, Iriveni, Rohini, & Annapurna) AT VARYING LEVELS OF NITROGEN UNDER SEMI-DRY CONDITIONS IN TRIVANDRUM U1 - J N72 PE 51 PY - 1972/// CY - AGRICULTURAL COLLEGE AND RESEARCH INSTITUTE VELLAYANI PB - DIVISION OF AGRONOMY ER -