Lapwood, E. R., <br/><br/>
Free oscillations of the earth / 
E.R. Lapwood, T. Usami 
 - Cambridge :  Cambridge University Press,  1981 
 - 224 p. ;  22 cm. 
 - Cambridge monographs on mechanics and applied mathematics .
 - Cambridge monographs on mechanics and applied mathematics .
<br/><br/><label>ISBN: </label>0521235367 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Free earth oscillations<br/>Seismology