> Mehrbändiges Werk
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Part 2:
Report on the Echinoidea collected by the United States Fisheries steamer "Albatross" during the Philippine expedition, 1907-1910 Part 2 The Echinothuridae, Saleniidae, Arbaciidae, Aspidodiadematidae, Micropygidae, Diadematidae, Pedinidae, Temnopleuridae, Toxopneustidae, and Echinometridae by Theodor Mortensen
Washington: United States Government Printing Office, 1940