Gait, R. I. <br/><br/>
Exploring minerals & crystals / 
Robert I. Gait ; photographs by Arthur Williams 
 - Toronto :  McGraw-Hill Ryerson,  1972 
 - 119 p. :  ill. ;  30 cm. 
<br/><br/>Bibliography : p. 117 
<br/><br/><label>ISBN: </label>0070773955 
<br/><br/><label>LCCN: </label>72-038535 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy<br/>Crystals