Styl cytowania APA

Van Der Berg, H. H. (1981). Horticultural research international: Directory of horticultuRal research institutes and their ac tivities in 61 countries. International Society for Agricultural Sciences.

Styl cytowania Chicago

Van Der Berg, H H. Horticultural Research International: Directory of HorticultuRal Research Institutes and Their Ac Tivities in 61 Countries. Netherlands: International Society for Agricultural Sciences, 1981.

Styl cytowania MLA

Van Der Berg, H H. Horticultural Research International: Directory of HorticultuRal Research Institutes and Their Ac Tivities in 61 Countries. International Society for Agricultural Sciences, 1981.

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