Buchdahl, H. A. <br/><br/>
Introduction to Hamiltonian optics 
by H. A. Buchdahl 
 - Cambridge  University Press  1970 
 - xv,360p.;  22cm. 
 - Cambridge monographs on physics .
<br/><br/><label>Dewey Class. No.: </label>535.32  / BUC