المؤلفون: COTT, G. E., ROBERTS, AUSTIN, PLOWES, D., HAMILTON, K., BENSON, C. W., BOWKER, FRED, HURST, G. T., BURTON, RICHARD, LEPPAN, A. W., GARLAND, IAN, CALDER, DAVID, BATTEN, THOS A.

المصدر: Ostrich: The Journal of African Ornithology; Mar1944, Vol. 15 Issue 1, p69-78, 10p