Hony, B. V. Active mathematics 3 / B.V. Hony, D.A. Turner - 2nd ed - Harlow : Longman, 1992 - 253 p. : ill. ; 24 cm ISBN: 0582084415 Subjects--Topical Terms: Mathematics---- Study and teaching (Secondary)---- Great Britain LC Class. No.: QA11.2 / .H63 1992