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	1.	No cover image available Moluscos fósiles del río Pachitea y sus alrededores en la región oriental del Perú by Pilsbry, Henry Material type: Article; Format: print Language: Spa In: Boletín del Museo de historia natural "Javier Prado" 36-37, 1946, p. 32-57 : ill. Availability: No items available.
	2.	No cover image available Balanus in the Oligocene of Northern Peru and Western Ecuador by Olsson, Axel Pilsbry, Henry Material type: Article; Format: print ; Literary form: Not fiction Language: Spa In: Volumen jubilar : 25 aniversario, parte II p. 1-6 : ill. Availability: No items available.
	3.	No cover image available Report on barbacles of Peru, collected by Dr : R E Coker and others by Pilsbry, Henry Material type: Article; Format: print ; Literary form: Not fiction Language: Eng In: Proceedings of the United States National Museum : Volume 37 p. 63-74 : ill. h. t. Availability: No items available.

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