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1دورية أكاديمية
المؤلفون: Lindstrand, Len, Nelson, Julie Kierstead, Riefner,, Richard E., Hrusa, G. Frederic, Mallinson, David, Lepschi, Brendan, Columbus, J. Travis, Boyd, Steve, White, Scott D., Primrose, Brant
المصدر: Madroño, 2008 Oct 01. 55(4), 306-313.
URL الوصول: https://www.jstor.org/stable/41425790