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Nitrogen contribution by multipurpose trees to rice and cowpea in an alley cropping system in Sierra Leone
D. S. Amara, N. Sanginga, S. K. A. Danso, D. S. SualeVolume:
34
Language:
english
Pages:
10
DOI:
10.1007/bf00148156
Date:
May, 1996
File:
PDF, 505 KB
english, 1996