Migdal, A.B. <br/><br/>
Approximate methods in quantum mechanics   
by A.B. Migdal, V.Krainov,tr. by Anthony J.Leggett 
 - New york  W.A.Benjamin,Inc.  1969 
 - xi, 146p. 
 - Frontiers in physics .
<br/><br/><label>Dewey Class. No.: </label>530.12  / N698