Discussion of " Tunnel Survey and Tunneling Machine Control by Edward W. Peterson and Peter Frobenius"

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by Ralph J. Angarola, Jr., Resident Engr.; Mason & Hanger-Silas Mason Co., Inc., New York, NY,

Serial Information: Journal of the Surveying and Mapping Division, 1974, Vol. 100, Issue 2, Pg. 175-176

Document Type: Discussion & Closure

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