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- Agriculture 14
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Hunger signs in crops : a symposium / prepared by S. A. Barber ...[et al.].
Publicado 1964Procedimiento de la Conferencia Libro -
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An investigation of food shortages in Papua New Guinea 24 March to 3 April, 1981
Publicado 1982Libro -
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1987 British crop protection conference: proceedings of a conference held at Brighton Metropole, England, November 16-19, 1987.
Publicado 1987Procedimiento de la Conferencia Libro
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Estimating crop production in development projects : methods and their limitations /
Publicado 1985Libro -
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