Hopwood, Robert R.  <br/><br/>
Science model making / 
Robert R. Hopwood. 
 - 3rd ed. 
 - London:  John Murray,  1968. 
 - 111 p. :   ill. ;   25 cm. 
<br/><br/><label>ISBN: </label>0719506727 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science