Canadian abridgment 

 - Tronoto  Burroughs & Company (Eastern ) Ltd.     1940 
 - xxxiii,1186p  cm. 
<br/><br/><label>Standard No.: </label>27,651 
<br/><br/><label>Source: </label> Reports / Technical Reports 
<br/><br/><label>Dewey Class. No.: </label>Z72y7z, H0