Karugaba, Joseph. Mathematics : for secondary schools student's book 4 / Joseph Kar ugaba, Chris Olley. - 2nd ed. - Kampala : Fountain, 2010. - vi, 264 p. : ill., tables ; 26 cm. Includes index. ISBN: 9789970020713 Subjects--Topical Terms: Mathematics--Study and teaching (Secondary).------ Dewey Class. No.: 510.7126761