Murphy, Frank <br/><br/>
Square one  : a basic math course for adults 
Frank Murphy 
 - Cambridge:  National Extension College Correspondence Texts,  1973. 
 - Volume II, Units 6-10 
<br/><br/><label>ISBN: </label>0902404237 
<br/><br/><label>Dewey Class. No.: </label>510  / MUS