TY - BOOK AU - Gorrie, Peter TI - Heinemann active maths : Northern Ireland : Agebraic thinking pupil book 3 SN - 9780000000000 U1 - J513 211076 HEI PY - 0000/// Pearson Education CY - Harlow PB - Essex KW - MATHEMATICS PROBLEMS EXERCISES ETC JUVENILE LITERATURE ER -