Ivakin, B.N. <br/><br/>
Microstructure and macrostructure of elastic waves in one-dimenstional continuous nonhomogenenous media   
by B.N. Ivakin. 
 -  A.G.U.C.B.  1958 
<br/><br/><label>Dewey Class. No.: </label>531.381  / N60