1.
Laboratories in Mathematical Experimentation A Bridge to Higher Mathematics
by Pollatsek, Harriet S., O'Sh...
ISBN: 9780387949222
List Price: $49.95
2.
Difference Sets: Connecting Algebra, Combinatorics, and Geometry (Student Mathematical Library)
by Emily H. Moore, Harriet S. ...
ISBN: 9780821891766
List Price: $49.00