Charles River Associates & U. S. General Services Administration. Property Management and Disposal Service. (1969). Economic analysis of the tungsten industry. CRA.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCharles River Associates और U. S. General Services Administration. Property Management and Disposal Service. Economic Analysis of the Tungsten Industry. Cambridge, Mass: CRA, 1969.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCharles River Associates और U. S. General Services Administration. Property Management and Disposal Service. Economic Analysis of the Tungsten Industry. CRA, 1969.
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