Ivy, Bill Getting to know nature's children : bighorn sheep Bighorn sheep Getting to know nature's children : Prairie dogs Prerie dogs - N.p.: Grolier Book, 1999 - 48 p. : col. ill. - Getting to know nature's children . ISBN: 0717288366 Subjects--Topical Terms: SheepsDogs Dewey Class. No.: 599.6497 / IV96