Giff, Patricia Reilly. The clue at the zoo. / by Patricia Reilly Giff; Illustrated by Blanche Sims. - 1st ed. - New York, New York : Bantam Doubleday Dell Publishing Group, Inc, 1990. - 74p. ISBN: 0-440-40318-9 Subjects--Topical Terms: Zoo--FictionMystery--Fiction