UNESCO <br/><br/>
Intergrated Science a new approach  Book 1 

 - London  1987 
 - (4), 268  Pb  27cm 
<br/><br/><label>ISBN: </label>962-03-0209-5 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>500