00809cam a2200241 4500 1855718242 TxAuBib 20210607120000.0 031107s1998||||||||||||||||||||||||eng|u 98-38373 9780877456391 $30.00 0877456399 $30.00 TxAuBib Anderson, Wayne I., 1935- Iowa's geological past : three billion years of earth history / by Wayne I. Anderson. Iowa City, IA : University of Iowa Press, 1998. 424 p : illus. bur oak original, A Includes bibliographical references and index. 20210607. Geology Iowa. A bur oak original.