Petrak, F <br/><br/>
Rupappedutthal 

 - Thiruvananthapuram  State Institute of Languages  1972 
 - 207p. 
<br/><br/><label>Subjects--Uniform Titles: </label>--General Stack
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering--Applied Physics--Generalia
<br/><br/><label>Dewey Class. No.: </label>621.811  / PET-R