@article{d8525d814fbf4609a35e164548906f53,
title = "Estimates of sub-national nutrient balances as sustainability indicators for agro-ecosystems in Ecuador.",
keywords = "bodemchemie, anorganische verbindingen, mineralen, ecologie, gewassen, landbouw, fenologie, acclimatisatie, ruimtelijke ordening, landgebruik, zonering, ecuador, agro-ecosystemen, soil chemistry, inorganic compounds, minerals, ecology, crops, agriculture, phenology, acclimatization, physical planning, land use, zoning, ecuador, agroecosystems",
author = "{de Koning}, G.H.J. and {van de Kop}, P.J. and L.O. Fresco",
year = "1997",
doi = "10.1016/S0167-8809(97)00059-5",
language = "English",
volume = "65",
pages = "127--139",
journal = "Agriculture, Ecosystems and Environment",
issn = "0167-8809",
publisher = "Elsevier",
}
