@book{264557,
	author = {National Cancer Institute (U.S.)},
	title = {Mammary nodules in dogs during four year treatment with megestrol acetate or chlormadinone acetate.},
	year = {1973]},
	address = {[Washington, D.C.,},
	note = {[Reprinted from JNCI, v.51, no.4, Oct. 1973].}
}