Statistical summary of the mineral industry    Production exports and imports 1948-1953 

 - NA  NA         1949 
 - Colonial geological surveys 1955 .
<br/><br/><label>Standard No.: </label>136,615 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMICS
<br/><br/><label>Dewey Class. No.: </label>X9H1:B28, H9(906)