@inproceedings{inproceedings21a214e1,
title   = {Fate of 'ANTPOT. 15 N'-urea applied to wheat-soybean sucession},
author = {Boaretto, Antonio Enedi and Spolidorio, E. S. and Freitas, J. G. and Trivelin, Paulo Cesar Ocheuze and Muraoka, Takashi and Cantarella, H.},
year = {1999},
booktitle   = {Congreso Lationamericano de la Ciencia del Suelo}
}