Bünning, E. (1989). Ahead of his time, Wilhelm Pfeffer: Early advances in plant biology. Carleton University Press.
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Chicago-čujuhus (17. p.)
Bünning, Erwin. Ahead of His Time, Wilhelm Pfeffer: Early Advances in Plant Biology. Ottawa, Canada: Carleton University Press, 1989.
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MLA-čujuhus (9. p.)
Bünning, Erwin. Ahead of His Time, Wilhelm Pfeffer: Early Advances in Plant Biology. Carleton University Press, 1989.
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