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2. Origins of the CSIRO Booroola;Turner,1982
3. Bindon B. M. and Piper L. R.: Physiological characteristics of high fecundity in sheep and cattle. In Proc. Wld Congr. Sheep, Cattle Breed, 1, Technical (Edited by R. A. Barton and W. C. Smith). Dunmore Press, Palmerston North, New Zealand pp. 315–331.
4. Segregation of a major gene influencing fecundity in progeny of Booroola sheep in New Zealand;Davis;N.Z. Jl agric. Res.,1982
5. Genetic segregation for fecundity in Booroola Merino sheep;Piper,1982