UNESCO <br/><br/>
New trends in chemistry teaching--vol-1 # New trends in chemistry teaching--vol-1  (1964--1965) # New trends in Chemistry teaching  Vol 1 (1964--1965) 

 - Unesco  United Nations  1968 
 - x, 359  Pb  26.2cm 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>540.7