Contributions to the biology of the Philippine Archipelago and adjacent regions. Ophiurans of the Philippine seas and adjacent waters
Koehler, R. (1922). Contributions to the biology of the Philippine Archipelago and adjacent regions. Ophiurans of the Philippine seas and adjacent waters. Bulletin. United States National Museum, 100. Vol. 3. Government Printing Office: Washington. 486, plates 1-103 pp.
Deel van: Bulletin of the United States National Museum. Smithsonian Institution: Washington. ISSN 0362-9236, meer
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