@INPROCEEDINGS {ABIFARIN:1976d, title = {Rice zonal variety trials and performance of promising upland and swamp rice varieties: paper presented at the second NAFPP National Rice/Maize Workshop, FDAR, Moor Plantation, Ibadan, January 12th, 1976}, author = {Abifarin, A. O. and Okereke, M. I. }, booktitle = {IITA Cereal Improvement Program papers: 1972-76}, year = {1976}, month = {January}, pages = {1--9}, }