Chemistry :  teacher's guide. 

 - [Harmondsworth] :  Penguin,  [1970] 
<br/><br/>Bibliography: v. 2: p. 337-343. 
<br/><br/>v. 1. Topics 1 to 12 -- v. 2. Topics 13 to 19. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry -- Study and teaching.--Chemistry -- Study and teaching.