New trends in the utelization of educational technology for science education 
by Unesco 
 - Paris  Unesco  1974 
 - 247p. 
<br/><br/><label>ISBN: </label>92-3-101-143-x 
<br/><br/><label>Subjects--Topical Terms: </label>--School of Pure and Applied Sciences
<br/><br/><label>LC Class. No.: </label>Q 181   / .H475 1975 
<br/><br/><label>Dewey Class. No.: </label>Q 181 .H475 1975