@inproceedings{inproceedings740b0fda,
title   = {Influence of cationic impurities in acidulated phosphates on the availability of phosphorus to two corn crops},
author = {Prochnow, Luís Ignácio and Kiehl, Jorge de Castro and Raij, B Van},
year = {1998},
booktitle   = {World Congress of Soil Science}
}