Statistics Problem Solver by Dr. Ogden, James R: Used

Complex Variables Problem Solver by Emil G. Milewski, Ph.D. 1998 SC

Complex Variables and Applications by Ruel V. Churchill and James Ward Brown...

Psychology Problem Solver by Dr. Ogden, James R: Used

Complex Variables Problem Solver (Problem Solvers Solution Guides)

Schaum's Outline of Complex Variables by Spiegel, Murray R.

Electronics Problem Solver by The Editors of Rea; Gu, You-Liang (Edward)

Schaum's Outline of Complex Variables by Spiegel, Murray R.