Blackie sbn: 216 89066 7. - Chambers sbn: 550 75811 9. With answers.
Previous ed. (B67-3905) 1967.
Modern mathematics for schools; [in 9 books]. Revised ed.: [Decimal ed.]. Book 4 [teacher's ed.] by Scottish Mathematics Group. Published by Blackie in 1969. Publication and catalogue information, links to buy online and reader comments.