1. Cow-calf herd production;Cartwright,1977
2. Simulated milk-beef production systems in Colombia;Cartwright;J. Anim. Sci.,1977
3. Alternative beef production systems for Guyana;Davis;J. Anim. Sci.,1976
4. Mathematical modelling of livestock production systems: application of the Texas A&M University of beef cattle production model to Botswana;International Livestock Center for Africa,1978
5. Application of mathematical programming to evaluation of systems of beef cattle breeding;Long,1972