00000cam 2200000zi 4500 9.962485 CaOODSP 20260501131321 m o d f cr |n||||||||| 260501s1952 oncdab ob f|0| 0 eng d CaOODSP eng rda CaOODSP n-cn-on Fs52-3/523E-PDF Welch, H. E., author. Factors affecting the infection of the whitefish, Coregonus clupeaformis (Mitchill), by the tapeworm, Triaenophorus crassus Forel, in the Thunder Bay district of Ontario / H.E. Welch. [Ottawa] : Fisheries Research Board of Canada, 1952. 1 online resource (87 pages) : charts, illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Manuscript reports of the biological stations ; no. 523 Digitized edition from print [produced by Department of Fisheries and Oceans]. "A thesis submitted in conformity with the requirements for the Degree of Master of Arts in the University of Toronto. This work carried on under the auspices of the Fisheries Research Board of Canada." Includes bibliographical references (pages 77-80). Lake whitefish Parasites Ontario Thunder Bay (District) Tapeworms Ontario Thunder Bay (District) Grand corégone Parasites Ontario Thunder Bay (District) Cestodes Ontario Thunder Bay (District) Fisheries Research Board of Canada, issuing body. Manuscript reports of the biological stations ; no. 523. (CaOODSP)9.899091 PDF 5.10 MB https://publications.gc.ca/collections/collection_2026/mpo-dfo/fs52-3/Fs52-3-523-eng.pdf