Basic algebraic techniques : concepts and manipulations / W. Buryl McWaters, Anita H. McWaters, Robert L. Drennen. McWaters, W. Buryl. McWaters, Anita H. Drennen, Robert L. Algebra. 516.5 MCB Dubuque, Iowa : Kendall / Hunt Publishing , c1974. c1974. Text 217 p.: eng