Cottam, W. P. (1947). Is Utah Sahara bound? Extension division, University of Utah.
Dyfyniad Arddull ChicagoCottam, Walter P. Is Utah Sahara Bound? Salt Lake City: Extension division, University of Utah, 1947.
Dyfyniad MLACottam, Walter P. Is Utah Sahara Bound? Extension division, University of Utah, 1947.
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