@conference {39344,
	title = {The Use of an Ultrasonic Device for Detection of Pregnancy in the Ewe},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {31},
	year = {1971},
	month = {Jan},
	pages = {180-185},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	issn = {1176-5283},
	author = {Allison AJ}
}
