Hawkes, A. D. (1966). Grafia, a new genus of orchids. Zenodo.
Chicago-čujuhus (17. p.)Hawkes, A D. Grafia, a New Genus of Orchids. Zenodo, 1966.
MLA-čujuhus (9. p.)Hawkes, A D. Grafia, a New Genus of Orchids. Zenodo, 1966.
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