Vagt, G.O. <br/><br/>
Clays and clay products /  
G.O. Vagt. 
 - Ottawa :    Dept. of Energy, Mines and Resources,    1975. 
 - 11 p. :    ill., maps ;    25 cm. 
 - 1975 ;    no. 13 .
<br/><br/><label>Subjects--Topical Terms: </label><br/> Clay -- Canada.<br/> Clay industries.
<br/><br/><label>Gov. Doc. Class. No.: </label>G CAN E64 (08) 3/13