@book{214654,
	author = {Perera, B. M. a. o. and Karunaratne, A. M.},
	title = {Postpartum ovarian activity, uterine involution and fertility in indigenous buffaloes at a selected village location in Sri Lanka},
	publisher = {Elsevier Science Publishers},
	year = {1987},
	address = {Amsterdam}
}