المؤلفون: Robbins, R.K., Sullivan, J.J., Pace, M.M., Elliott, F.I., Bartlett, D.E., Press, P.J., W. R. Grace & Co.

المصدر: Theriogenology ; volume 10, issue 2-3, page 247-255 ; ISSN 0093-691X

الاتاحة: http://dx.doi.org/10.1016/0093-691x(78)90024-9
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