1. Mating activity of Junin rams under range conditions in the Andes of Peru;Chavez,1985
2. Increased ovulation rate at the ram-induced ovulation and its commercial application;Cognie,1980
3. Sheep improvement in Peru;Gamarra,1982
4. Influence of behavior on reproduction;Lindsay,1980
5. MSUSTAT statistical analysis package;Lund,1987