Williams, Ralph C. <br/><br/>
Mathematics for communication :  number relations / 
Ralph C. Williams. 
 - Pacific Palisades, Calif.,  Goodyear Pub. Co.  [1971, c1972] 
 - viii, 303 p.  illus.  28 cm. 
<br/><br/>Geometry of illustrations and drawings (Page-7), Language of sets, numbers and operations (Page-37), Representations of numbers (Page-57), Computation processes of addition and substraction (Page-77), Computation processes of multiplication and division (Page-101), Relations and functions (Page-127), Multiple and advisor relations (Page-145), Arithmetic and algebraic expressions (Page-163), Geometry of plane and solid figures (Page-181), Fraction and fractional numerals (Page-203), Ratio comparison and percent (Page-249), Integers (Page-269), Ratioinal and real numbers (Page-281). 
<br/><br/><label>ISBN: </label>087620552X 
<br/><br/><label>LCCN: </label>70123614 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic.
<br/><br/><label>Dewey Class. No.: </label>510,WIL