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Captive breeding
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Melides, N
Melides, N
Memorandum on Fertility Rates
Memorandum on Fertility Rates
Philadelpia Zoo
Philadelpia Zoo
Press Releases
Press Releases
Raven, Joyce
Raven, Joyce
Returns of Animals Bred in the Gardens
Returns of Animals Bred in the Gardens
Rhinos on breeding loan
Rhinos on breeding loan
Rhinos on Breeding Loan Correspondence
Rhinos on Breeding Loan Correspondence
Ritchie, J N
Ritchie, J N
The Difficulties of Breeding Bears, Especially Kodiak Bears, in Captivity by E H Tong
The Difficulties of Breeding Bears, Especially Kodiak Bears, in Captivity by E H Tong