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Ocean manganese nodules
Strategy of Conversation Management of Commercial Aloe Species in Kenya
Fiber-optic communication links for unmanned inspection submersibles
Traditional and commercial farm supply response in agricultural development : the case for basic grains in Guatemala
Earth tones-- : the book : federal science for sustainable development
Agricultural policy : a linear programming application to Guatemala
OTEC anchors : selection and plan for development
Diversification opportunities and effects of alternative policies on Costa Rican coffee farms
Proceedings of the 36th Southern Pasture and Forage Crop Improvement Conference : May 1-3, 1979, Beltsville, Maryland
Forest research in Alberta 1983