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	1.	Marshall's unionid types or Types of Recent and fossil Unionacea and Mutelacea introduced by William B. Marshall, including a bibliography of all his writings on mollusks. by Johnson, R.I [author] Material type: Text; Literary form: Not fiction Publisher: Cambridge Harvard University 1974 Availability: No items available. Add to cart (remove)
	2.	Lea's unionid types or Recent and fossil taxa of Unionacea and Mutelacea introduced by Isaac Lea, including the location of all the extant types. by Johnson, R.I [author] Material type: Text; Literary form: Not fiction Publisher: Cambridge Harvard University 1974 Availability: No items available. Add to cart (remove)
	3.	Heude's Molluscan types or Asian land and fresh water Mollusks, mostly from the people's Republic of China, described by P.M. Heude. by Johnson, R.I [author] Material type: Text; Literary form: Not fiction Publisher: Cambridge Harvard University 1973 Availability: No items available. Add to cart (remove)

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