![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | Lucas, J., 1971. Mammals bred in captivity in 1969. International Zoo Yearbook 11: 279
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![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | Lucas, J., 1971. Census of rare animals in captivity in 1970. International Zoo Yearbook 11: 334-335
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![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | Lucas, J., 1970. Census of rare animals in captivity in 1969. International Zoo Yearbook 10: 323
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![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | Lucas, J., 1970. Mammals bred in captivity in 1968. International Zoo Yearbook 10: 268
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![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | Lucas, J., 1969. Mammals bred in captivity in 1967. International Zoo Yearbook 9: 233
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![](http://www.rhinoresourcecenter.com/style_images/1/cat_arrow.gif) | Lucas, J., 1969. Census of rare animals in captivity in 1968. International Zoo Yearbook 9: 291
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