Warsito, Sunaryo hadi and Sigit, Setiawati and Lamid, Mirni and Hermadi, Herry Agoes (2014) Production of Progesterone Implants to Mass Estrus Synchronization and Optimization Levels Pregnancy on Fat Tailed Sheep of Strains Sapudi Madura Island. International Journal of Academic Research : Part A Applied and Natural Sciences, 6 (6). pp. 235-238. ISSN 2075-4124