Selected minerals in soils, plants and pheasants : an ecosystem approach to understanding pheasant distribution in Illinois Jones, Robert L. (Robert Lewis), 1936- creator Anderson, William L. contributor Labisky, Ronald F. contributor text book Urbana,Ill Dept. of Registration and Education, Natural History Survey Division 1968 1968
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ENG Illinois Soils Biological notes, no.63 https://www.biodiversitylibrary.org/bibliography/200920 0073-490X https://www.biodiversitylibrary.org/bibliography/15012 6057281 10.5962/bhl.title.15012 MOA