(1972). Lawrence softrock tunnelers for mining and construction from lawrence manufacturing company. Washington: Ingersoll-Rand.
Chicago Style CitationLawrence Softrock Tunnelers for Mining and Construction From Lawrence Manufacturing Company. Washington: Ingersoll-Rand, 1972.
MLA CitationLawrence Softrock Tunnelers for Mining and Construction From Lawrence Manufacturing Company. Washington: Ingersoll-Rand, 1972.
Warning: These citations may not always be 100% accurate.