Mayshark, Cyrus. <br/><br/>
Health education in secondary schools :  integrating the critical incident technique 
by Cyrus Mayshark and Roy A. Foster 
 - 3rd ed. 
 - St. Louis :  Mosby,  1972 
 - 395 p. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>0801631769 
<br/><br/><label>LCCN: </label>77-173431 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Health education (Secondary).<br/>Critical incident technique.