@conference {39588,
	title = {A system of identifying factors limiting the reproductive performance of commercial sheep flocks},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {38},
	year = {1978},
	month = {Jan},
	pages = {80-89},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Kelly RW and Allison AJ and Johnstone PD}
}
