Handbook on environmental aspects of fertilizer use / NPK--Centre d'étude de l'azote (CEA), International Fertilizer Industry Association (IFA), International Potash Institute (IPI).
Published
The Hague ; Boston : M. Nijhoff/W. Junk for the CEA, IFA, IPI, 1983. Hingham, MA : Distributors for the U.S. and Canada, Kluwer Boston.