Walker, G W . <br/><br/>
Modern Seismology /  Textual Documents 
G W Walker. 
 - 1st ed / 
 - New york :  Longmans Green and Co ,  1913. 
 - 88 p ;  22 cm. 
<br/><br/><label>ISBN: </label> HB 
<br/><br/><label>Subjects--Index Terms: </label>T/G-Physics 
<br/><br/><label>Dewey Class. No.: </label>530  / W 152 M