David E. Heyd

The mathematics of investment

Elementary Algebra

Study and Solutions Guide for Claculus

Study and Solutions Guide for Larson's Calculus, Volume I

Study and Solutions Guide for Calculus

Technology Laboratory Guide to Accompany Calculus with Analytic Geometry

College Algebra

Intermediate Algebra

Trigonometry

Student Solutions Manual to Accompany Calcusus (Larson and Hostetler)

Study and solutions guide for Calculus, alternate fourth edition, Larson/Hostetler

Calculus Expanded Student Study and Solution Guide

Study and solutions guide to accompany Calculus