@inproceedings{inproceedings509d359e,
title   = {Use of stable isotopes in soil organic matter studies},
author = {Cerri, Carlos Clemente and Eduardo, Brigitte Josefine Feigl de Paula and Piccolo, Marisa de Cassia},
year = {1991},
publisher = {Iaea},
booktitle   = {International Symposium on the Use of Stable Isotopes in Plant Nutrition, Soil Fertility and Environmental Studies}
}