Trovati 4 documenti.
Trovati 4 documenti.
Computations for studies of soil fertility and fertilizer requirements / by J. D. Colwell
Slough : CAB, 1978
The role of organic matter in modern agriculture / edited by Y. Chen and Y. Avnimelech
Dordrecht (etc.) : Martinus Nijhoff, 1986)
Developments in plant and soil sciences ; 25
Bern : International potash institute, 1976
Fertilizer manual / edited by Travis P. Hignett
Dordrecht (etc.) : Martinus Nijhoff/Dr W. Junk Pubblishers, 1985)
Developments in plant and soil sciences ; 15