Statistical yearbook of Norway 

 - Oslo  Central bureau of statistics of Norway       1974 
 - 32+459p.(93rd issue)  cm. 
 - ISBN:82-537-0385-6 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>n573.N74, L4