Assertion: cave's geology | /r/HasProperty | the caves of missouri
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text: His post-retirement body of work includes Geology of the Chicago Region (1955), The Caves of Missouri (1956), Washington's Channeled Scabland (1959), Caves of Illinois (1961), and Geomorphic History of the Ozarks (1965) -- in addition to his 1949 Incomplete Genealogy of the Family of John Bretz Of Fairfield Co., Ohio, with a Partial History of One Line of Descent in this Family.