Structures and forces :  a unit for teachers : stage 3 / 
 SC 5/13 
University of Bristol School of education. 
 - trial ed. 
 - London:   Macdonald & Co,   1970.  
 - 105 p. ;  25 cm. 
 - Science 5/13 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)<br/>Structural design--Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.35