@inproceedings{inproceedingsad001d20,
title   = {Effect of N fertilization on Phaseolus cultivares},
author = {Tsai, Siu Mui and Silva, Paulo Marcos da and Bonetti, Roberto and Lara Cabezas, W and Trivelin, Paulo Cesar Ocheuze},
year = {1987},
publisher = {Aard},
booktitle   = {Symposium on the Contribution of Biological Nitrogen Fixation To Plant Production}
}