The contest problem book III :  annual high school [examinations] contests, 1966-1972 / 
compiled and with solutions by Charles T. Salkind and James M. Earl. 
 - Washington :  Mathematical Association of America,  1973. 
 - vi, 186 p. :  ill. 
 - New mathematical library ;  25 .
<br/><br/><label>ISBN: </label>0394015819 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Problems, exercises.<br/>Mathematics--Examinations, questions.<br/>Mathematics--Competitions.