https://openlibrary.org/books/OL772150M.opds Ohio flint types 2023-02-23T06:22:32Z Robert N. Converse https://openlibrary.org/authors/OL438739A/Robert_N._Converse Archaeological Society of Ohio [Columbus, Ohio] 1994 212 p. : Includes bibliographical references (p. 210-211). eng https://openlibrary.org/books/OL772150M 31856143 97171896