@article{3bc05c29d0d34d44b6d67bcab0545650,
title = "Nutrient balances as indicators of productivity and substainability in Sub-Saharan African agriculture: Papers Presented during the conference Soil Fertility Management in Sub-Saharan Africa{"} held in Nairobi, February 1997",
keywords = "ADLIB-ART-2011",
author = "E.M.A. Smaling and J.K. Lynam and S.M. Nandwa",
year = "1998",
language = "English",
volume = "71",
journal = "Agriculture, ecosystems and environment",
issn = "1873-2305",
publisher = "Elsevier B.V.",
number = "1/3",
}