Cook, A. H. <br/><br/>
Gravity and the earth 

 - London:  Wykeham Publications Ltd,  1969. 
 - xi,95p.:  ill.;  20cm. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gravity
<br/><br/><label>LC Class. No.: </label>QB331.C63