1.
Interactive Linear Algebra: A Laboratory Course Using Mathcad (TM) (Textbooks in Mathematica...
by Gerald J. Porter, David R. ...
ISBN: 9780387946085
List Price: $69.95
2.
Alpha-Fetoprotein and Congenital Disorders
by Porter, Ian H., Mizejewski,...
ISBN: 9780125016308
List Price: $53.00