TY - BOOK AU - LaBerge,Gene L. TI - Geology of the Lake Superior Region SN - 0945005156 (pbk.) AV - QE78 .L3 1994 U1 - 557.74/9 20 PY - 1994/// CY - Phoenix, Ariz. PB - Geoscience Press KW - Geology KW - Superior, Lake, Region N1 - Includes bibliographical references (p. [301]-304) and index ER -