Bengtsson, Arvid. <br/><br/>
Adventure playgrounds / 
Arvid Bengtsson. 
 - London :  Crosby Lockwood,  [1972]. 
 - 167 p. :  ill. 
<br/><br/><label>ISBN: </label>0258968354 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Playgrounds.