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Farm management in peasant agriculture
Collinson, Michael P., (1983)
Standardformulierungen von LP-Matrizen als Grundlage der Betriebsplanung in der Wirtschaftsberatung
Riebe, K., (1975)
Specification and use of farm growth and planning models in policy extension activities
Doering", Otto Charles, (1983)
On-Farm Reserach to Develop Technologies Appropriate to Farmers
Byerlee, Derek, (1981)
Towards a new green revolution : a perspective from the CGIAR Secretariat
Collinson, Michael P., (1992)