1. Holsteins in Puerto Rico: I. Influence of herd, year, age, and season on performance;Camoens;J. Agric. Univ. Puerto Rico.,1976
2. Holsteins in Puerto Rico. III. Components of variance associated with production traits and estimates of heritability;Camoens;J. Agric. Univ. Puerto Rico.,1976
3. The development of the Australian Milking Zebu;Hayman;World Anim. Rev.,1974
4. Henderson, C. R. 1973. Sire evaluation and genetic trend. Proc. Anim. Breeding Genet. Symp. in Honor of Dr. Jay L. Lush. Am. Soc. Anim. Sci., Champaign, IL.
5. Estimation of variance and covariance components;Henderson;Biometrics,1953