Bibliography

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1914
Welch PSmith.  1914.  The early stages of the life history of Polystoechotes punctatus Fabr. Bulletin of the Brooklyn Entomological Society. 9:1-6.
Welch PSmith.  1914.  Habits of the larva of Bellura melanopyga Grote (Lepidoptera). The Biological Bulletin. 27:97-114.
Welch PSmith.  1914.  A new Henlea (Enchytraeidae) from northern Michigan. Transactions of the American Microscopical Society. 33:155-164.
Welch PSmith.  1914.  Observations on the life history and habits of Hydromyza confluens Loew., (Diptera). Annals of the Entomological Society of America. 7:135-147.
Welch PSmith.  1914.  Studies on the Enchytraeidae of North America. Bulletin of the Illinois State Laboratory of Natural History. 10:123-212.
1916
Welch PSmith.  1916.  Contribution to the biology of certain aquatic Lepidoptera. Annals of the Entomological Society of America. 9:159-187.
1917
Welch PSmith.  1917.  Further studies on Hydromyza confluens Loew, (Diptera). Annals of the Entomological Society of America. 10:35-45.
1922
Welch PSmith.  1922.  The respiratory mechanism in certain aquatic Lepidoptera. Transactions of the American Microscopical Society. 41:29-50.
1923
Welch PSmith.  1923.  New records of North American Enchytraeidae. Transactions of the American Microscopical Society. 42:91-94.
1924
Welch PSmith, Loomis HA.  1924.  A limnological study of Hydra oligactis in Douglas Lake, Michigan. Transactions of the American Microscopical Society. 43:203-235.
Welch PSmith.  1924.  Observations on the early larval activities of Nymphula maculalis Clemens (Lepidoptera). Annals of the Entomological Society of America. 17:395-402.
1935
Welch PSmith, Eggleton FE.  1935.  Additional data on submerged depression individuality in Douglas Lake. Papers of the Michigan Academy of Science, Arts and Letters. 20:737-750.
Welch PSmith.  1935.  Limnology.
1941
Welch PSmith.  1941.  Dissolved oxygen in relation to lake types. Symposium on Hydrobiology. :60-70.
1943
Welch PSmith.  1943.  Frame for operating two reversing thermometers simultaneously. Limnological Society of America Special Publication. 13:4.
1944
Welch PSmith.  1944.  The hatchet planimeter as a limnological instrument. Limnological Society of America Special Publication. 14:7.
1945
Welch PSmith.  1945.  More data on depression individuality in Douglas Lake, Michigan. Papers of the Michigan Academy of Science, Arts and Letters. 30:379-390.
Welch PSmith.  1945.  Some limnological features of water impounded in a northern bog-lake mat. Transactions of the American Microscopical Society. 64:183-195.
1952
Welch PSmith.  1952.  Limnology. :xi+538.