The Engineers Year Book For 1949 Vol. Ii. 

 - 1st Ed. 
 -  SELF  1949 
 -  22 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>REF
<br/><br/><label>Dewey Class. No.: </label>620