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Dyfyniad Arddull ChicagoSargent, Merritt. Research on Cereal Production Technology in Senegal and Upper Volta. Washington: AID, 1974.
Dyfyniad MLASargent, Merritt. Research on Cereal Production Technology in Senegal and Upper Volta. AID, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.