Walker, G. W.  1874-1921 <br/><br/>
Modern seismology / 
by G. W. Walker 
 - London :  Longman,  1913 
 - xii, 88 p. :  plates ;  23 cm. 
 - Monographs on physics, ed. by Sir J. J. Thomson and Frank Horton .
<br/><br/> Three fold. diagrs. in pocket 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Seismology