![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | King, J.M.; Carter, B.H., 1965. The use of the oripavine derivative M.99 for the immobilisation of the black rhinoceros (Diceros bicornis) and its antagonism with the related compound M.285 or nalorphine. East African Wildlife Journal 3: 19-26, figs. 1-5, tables 1-2
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