@book{41998,
	author = {Collins, Larry R.},
	title = {Monotremes and marsupials},
	publisher = {Smithsonian Institution Press; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]},
	year = {1973.},
	series = {Smithsonian Institution. Publication no. 4888},
	address = {Washington},
	note = {Also presented as the author's thesis (M.S.), University of Maryland.}
}