Publisher: [s. 1. : s. n.], 1973.
Description: ix, 150 leaves : ill., maps ; 29 cm.
Notes: Cover title.; Prepared by Research Team, Clarion State College, Clarion, Pa., for the U.S. Dept. of Transportation under contract DOT-OS-30107.; Issued Sept. 15, 1973.; Bibliography : leaves 149-150.; Clarion University Faculty Publication (Frank T. Battista, 1970-1990).
