Fertilizers and high yielding varieties of rice wheat and maize in t he developing countries.
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TextPublication details: Zurich : Centre D'etude de L'azote, 1970.Description: iv, 30 p. : ill. (part col.) ; 16 x 22 cmSubject(s): DDC classification: - FAO HYV (08)1/2
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Published on the occasion of the Second World Food Congress.
Includes bibliographical references.
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