Green, J. R. The hormonal control of biennial bearing in cider apples.
Chicago-viite (17. p.)Green, Julia Rosemary. The Hormonal Control of Biennial Bearing in Cider Apples. University of Bristol, 1987.
MLA-viite (8. p.)Green, Julia Rosemary. The Hormonal Control of Biennial Bearing in Cider Apples.
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