Hirschi, Ron. Save our prairies and grasslands / by Ron Hirschi ; photos. by Erwin and Peggy Bauer. - New York : Delacorte, 1994. - p. cm. - An Audubon one earth book . ISBN: 0385311990 (pbk.) 0385311494 LCCN: 93004985 /AC Subjects--Topical Terms: Grassland ecology.Plant conservation.Ecology. Dewey Class. No.: 574.5