Lauwerys, Joseph Albert. <br/><br/>
Harrap's primary science series / 
adapted from the Heath science series, by H. and N. Schneider. 
 - Lond. &c.,  1962- 
 - 128 p. ;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Dewey Class. No.: </label>500  / LAU 1962