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A microplot study of the fate of15N-labelled ammonium nitrate and urea applied at two rates to ryegrass in spring
R. J. Stevens, R. J. LaughlinVolume:
20
Language:
english
Pages:
7
DOI:
10.1007/bf01055399
Date:
August, 1989
File:
PDF, 548 KB
english, 1989