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pro vyhledávání: '"P. F. Korsching"'
Autor:
R. D. William, J. M. Nehiley, L. H. Halsey, J. W. Thorne, P. F. Korsching, L·T· Christenberry
Publikováno v:
HortScience. 16:258-260
Extension educational materials were designed to communicate vegetable production information to citizens with varying educational and agricultural skills. Slide/tape sets written at 4th to 6th grade levels and extension circulars at 6th to 8th grade