Ablon, Leon J <br/><br/>
Basic trigonometry / 
by Leon J Ablon, Jean-Claude Derderian, Frances and others Lake. 
 - 2nd ed. 
 - California:  cummings,  1976. 
 - 124p. 
 - Series in Mathematics Modules .
<br/><br/><label>ISBN: </label>0846502607 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>516.24  / ABL