1. Increase beef cow productivity by increasing reproductive performance;Spitzer;Colorado State University Experiment Station, General series 949,1975
2. The relationship between reproduction and under-nutrition in beef cattle;Topps;Wld. Rev. Anim. Prod.,1977
3. Puberty in Brahman type cattle;Wiltbank,1978
4. Puberty in English, Brahman and crossbred breeds of heifers;Warnick,1965
5. Puberty in crossbred and straightbred beef heifers on two levels of feed;Wiltbank;J. Anim. Sci.,1969