Invloed van snoei op fotosintese, reserwestatus en droemateriaalproduksie van Ehrharta calycina J.E. Sm. en Osteospermum sinuatum (DC.) Norl.

Van der Westhuizen, F. G. J.(Francois Gysbert Johannes) (1980)

Thesis (Ph.D. Agric.) -- University of Stellenbosch, 1980.

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Thesis

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