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Witaya Pimda. Protocorm induction and cryopreservation of Dendrobium heterocarpum Lindl. . Khon Kaen:Khon Kaen University, 2009.
Witaya Pimda. (2009) Protocorm induction and cryopreservation of Dendrobium heterocarpum Lindl. . Khon Kaen University/Khon Kaen.