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  1. By: Hanson, Harold C. (Harold Carsten), - Jones, Robert L. (Robert Lewis),
    Publication info: Carbondale, Published by Southern Illinois University Press for the Illinois Natural History Survey, ©1976
    Holding Institution: University Library, University of Illinois Urbana Champaign
  2. By: Jones, Robert L. (Robert Lewis), - Hanson, Harold C. (Harold Carsten), - Ziegler, Eugene L. - Illinois. Natural History Survey Division
    Publication info: Champaign, Ill, Illinois Natural History Survey, 1987
    Holding Institution: University Library, University of Illinois Urbana Champaign
  3. By: Jones, Robert L. (Robert Lewis), - Anderson, William L. - Labisky, Ronald F.
    Publication info: Urbana,Ill, Dept. of Registration and Education, Natural History Survey Division, 1968
    Holding Institution: University Library, University of Illinois Urbana Champaign
  4. By: Hanson, Harold C. (Harold Carsten), - Jones, Robert L. (Robert Lewis), - Illinois. Natural History Survey Division
    Publication info: Urbana, Ill, State of Illinois, Dept. of Registration and Education, Natural History Survey Division, 1968
    Holding Institution: University Library, University of Illinois Urbana Champaign