@PROCEEDINGS {MAHAPATRA:1976d,
title = {Efficient use of fertilizers for rice in various agroecological situations in Sierra Leone},
author = {Mahapatra, I. C. and Kallon, J. M. },
booktitle = {Presented at the FAO/NORAD Fertilizer Conference, Njala, Sierra Leone, September 1976},
year = {1976},
month = {September},
}