Helical springs / 
prepared by the Spring Research Association. 
 - London :  Oxford University Press for the Design Council,  1974. 
 - 24 p. :  ill. ;  30 cm. 
 - Engineering design guides ;  8. .
<br/><br/>Includes bibliographical references (p. 24) and index. 
<br/><br/><label>ISBN: </label>019859142X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Springs.