Chemistry :  teachers' guide / 
Nuffield Avanced Science Project Team [E.H. Coulson ... [et al.]]. 
 - Middlesex, England :  Penguin Books,  c1970. 
 - 2 v. :  ill.  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemistry--Study and teaching.<br/>Chemistry.