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50 year trends in nitrogen use efficiency of world cropping systems: the relationship between yield and nitrogen input to cropland
Lassaletta, Luis, Billen, Gilles, Grizzetti, Bruna, Anglade, Juliette, Garnier, JosetteVolume:
9
Language:
english
Journal:
Environmental Research Letters
DOI:
10.1088/1748-9326/9/10/105011
Date:
October, 2014
File:
PDF, 1.44 MB
english, 2014