Strahorn, A. T., Carpenter, E. J., Scott, E., Heck, A. F., Krusekopf, H. H., Lunt, H. A., & Weir, W. W. (1934). Soil survey (reconnaissance) of the Columbia basin area, Washington. [U.S. Govt. print. off..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStrahorn, A. T., E. J. Carpenter, Ewing Scott, A. F. Heck, Henry Herman Krusekopf, Herbert A. Lunt, और Wilbert Walter Weir. Soil Survey (reconnaissance) of the Columbia Basin Area, Washington. Washington: [U.S. Govt. print. off., 1934.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStrahorn, A. T., et al. Soil Survey (reconnaissance) of the Columbia Basin Area, Washington. [U.S. Govt. print. off., 1934.
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