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1Seeds of famine; ecological destruction and the development dilemma in the West African Sahel Seeds of famine; ecological destruction and the development dilemma in the West African Sahel“...Montclair, N.J. (USA) Allanheld, Osmun Pub....”
Texto bibliotecaFAO IT -
2Organic agriculture: economic and ecological comparisons with conventional methods Organic agriculture: economic and ecological comparisons with conventional methodsby Oelhaf, R.C.“...Montclair, N.J. (USA) Allanheld, Osmun and Co. Pub....”
Published 1978
Texto bibliotecaFAO IT