@conference {38832,
	title = {Factors affecting the rate of herd improvement in New Zealand},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {3},
	year = {1943},
	month = {Jan},
	pages = {11-20},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Hamilton WM}
}
