Marshall, R.B., 1911, Results of spirit leveling in Arizona, 1899 to 1909, inclusive: U.S. Geological Survey Bulletin 463, 94 p. Authors Marshall, R.B. Publication Date 1911 Citation U.S. Geological Survey Bulletin 463, 94 p. State AZ Province AL County AL Keywords Engineering More Keywords Engineering, AzGeoBib RefNum 6431
