Cook, Alan H <br/><br/>
Gravity and the earth 
by A. H. Cook 
 - London  Wykeham Publications  1969 
 - xi, 94 p. : ill. ; 22 cm. 
 - Wykeham science series for schools and universities ; 3 .
<br/><br/>p. 92. 
<br/><br/><label>ISBN: </label>0851090702 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gravity