Chemical and biological surveys of the waters of Illinois.

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Item Link Original Source
Full view   no.6,9-11 University of Illinois at Urbana-Champaign
Full view   no.9 University of Illinois at Urbana-Champaign
Full view   no.11 1913 University of Virginia
Full view   no.12 1914 University of Virginia
Full view   no.13 1915 University of Virginia
Full view   no.14 1916 University of Virginia
Full view   no.15 University of Illinois at Urbana-Champaign
Full view   no.16 University of Illinois at Urbana-Champaign
Full view   no.22 1926 University of Virginia