Boyce, J. (1975). Agriculture reseach and extension programs. ADC.
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Dyfyniad Arddull Chicago
Boyce, James. Agriculture Reseach and Extension Programs. New York: ADC, 1975.
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Dyfyniad MLA
Boyce, James. Agriculture Reseach and Extension Programs. ADC, 1975.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.