Planski, V.; Yotov, S.; Parvanov, P.; Karadaev, M.; Ilieva, Y.; Hristov, K.; Dimitrov, D. INFLUENCE OF MELATONIN TREATMENT ON PUBERTY ONSET IN BUFFALO HEIFERS FROM BULGARIAN MURRAH BREED. Tradit. Mod. Vet. Med. 2017, 2, 56-60.