Frank J. Zillinsky and Charles Krull with wheat visitors at Ciudad Obregon
Geographical Area of Focus:
Ciudad Obregon, Sonora
Frank J. Zillinsky and Charles Krull receiving wheat visitors at Ciudad Obregon.
Charles Krull; Frank J. Zillinsky; Eugenio Martinez
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Frank J. Zillinsky and Charles Krull with wheat visitors at Ciudad Obregon. [1940-1960?]. . CIMMYT. Series: Wheat.