Sweetpotato culture and diseases
Steinbauer, C.E., Kushman, L.J.
Sweetpotato culture and diseases - Washington 1971 - 74 p. - No. 388; United States Departm .
633.492:632
Sweetpotato culture and diseases - Washington 1971 - 74 p. - No. 388; United States Departm .
633.492:632