Não informado. (1969). Sida, Contributions to Botany. Southern Methodist University.
Chicago-viite (17. p.)Não informado. Sida, Contributions to Botany. Dallas, Tex: Southern Methodist University, 1969.
MLA-viite (8. p.)Não informado. Sida, Contributions to Botany. Southern Methodist University, 1969.
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