Karaka, James (et al) Understanding Science/ Pupil's Book 7/ cover title Printed by Ramco Printing Works Ltd./ - Revised Edition - Nairobi : Longhorn Publishers (K) Ltd. , 2004. - iv, 144p. : col. ill. ; - 2004 ISBN: 9789966312822 Subjects--Topical Terms: Nairobi : Dewey Class. No.: 500.507