Bosstick, Maurice. <br/><br/>
Patterns in the sand :   an exploration in mathematics / 
Maurice Bosstick and John L. Cable 
 - 2nd 
 - California  Glencoe Press  1975 
 - 384p.: 
<br/><br/>Sets and Logic (Page-1), Numbers Pebbles Fingers, Symbols (Page-67), Algebra (Page-153), Probability (Page-191), Statistics (Page-249), Mathematical Systems (Page-297), Trigonometry and Calculus (Page-317). 
<br/><br/><label>LCCN: </label>7316908 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>Dewey Class. No.: </label>510,BOS