Langran, Ann. Has it gone off? / Ann Langran and Mark Nutting. - 24 p. Includes index. ISBN: 0582122910 (pbk) 9780582122918 (pbk) Subjects--Topical Terms: Food spoilageFood--StorageFood--PreservationReaders--Food--Care and hygiene.Readers. Dewey Class. No.: 428.6