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Filters: First Letter Of Title is S and Author is Welch, Paul Smith [Clear All Filters]
Some limnological features of water impounded in a northern bog-lake mat. Transactions of the American Microscopical Society. 64:183-195.. 1945.
Studies on the Enchytraeidae of North America. Bulletin of the Illinois State Laboratory of Natural History. 10:123-212.. 1914.