Toft, L & McKay, A D D.
Practical mathematics / L & McKay, A D D Toft. - [S.l.] : Sir Isaac Pitman & Sons, 1966. - 1 v. (unpaged)
Practical mathematics / L & McKay, A D D Toft. - [S.l.] : Sir Isaac Pitman & Sons, 1966. - 1 v. (unpaged)