1.
Challenging Problems in Algebra
by Posamentier, Alfred S., Sal...
ISBN: 9780486691480
List Price: $14.95
2.
Challenging Problems in Geometry
by Posamentier, Alfred S., Sal...
ISBN: 9780486691541
List Price: $14.95
3.
The Contest Problem Book III : Annual High School Contests 1966-1972 of the Mathematical Ass...
by Salkind, Charles T., Earl, ...
ISBN: 9780394015811
4.
The Contest Problem Book III: Annual High School Contest 1966-1972, Of the Mathematical Asso...
by Charles T. Salkind, James M...
ISBN: 9780883856253
List Price: $19.95