Pearson, D. <br/><br/>
Calcium /  
D. Pearson. 
 - Ottawa :    Dept. of Energy, Mines and Resources,    1977. 
 - v. ;    25 cm. 
 - 1977 ;    no. 10 .
<br/><br/><label>Subjects--Topical Terms: </label><br/> Potash -- Canada.
<br/><br/><label>Gov. Doc. Class. No.: </label>G CAN E64 (08) 3/10