Evans, I. O . <br/><br/>
Rocks, minerals & gemstones /  Textual Documents 
I. O. Evans. 
 - 1st ed / 
 - London :  Hamlyn ,  1994. 
 - 128p. :  ill ;  30cm . 
<br/><br/><label>Subjects--Index Terms: </label>Earth sceince 
<br/><br/><label>Dewey Class. No.: </label>550  / Ev 15 Ro