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| 3 | 3. Dairy Cattle Fertility and Sterility. 2007. Produced in cooperation with the Dairy Cattle Reproduction Council. ISBN 0-932147-51-8 4 4. Controlled Reproduction Cattle and Buffaloes. Ian Cordon. 2002. CAB1 Publishing. lSBN O851YY 1149 |
| 4 | 4. Controlled Reproduction Cattle and Buffaloes. Ian Cordon. 2002. CAB1 Publishing. lSBN O851YY 1149 |