Lehigh county, Pennsylvania. Geology and geography, by Benjamin LeRoy Miller. With chapters on Pre-Cambrian geology, by Donald McCoy Fraser; Jacksonburg formation, by Ralph LeRoy Miller; Martinsburg formation, by Bradford Willard; [and] Triassic rocks, by Edgar T. Wherry.
- Harrisburg, Pa., Dept. of Internal Affairs, Topographic and Geologic Survey, 1941.
viii, 492 p. incl. illus., tables. front., plates (1 fold.) 2 fold. maps (in pockets) 24 cm.