Williams, Howel . <br/><br/>
Petrography: An Introduction to the Study of Rocks in Thin Sections. /  Textual Documents 
Howel Williams, F.J. Turner and C.M. Gilbert. 
 - 2nd ed. / 
 - Delhi :  CBS Publishers & Distributors ,  1985. 
 - xiv, 626p. :  ill. ;  22cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Geology-Petrography Petrography Rocks PG-Geology Geology T/G-Geology 
<br/><br/><label>Dewey Class. No.: </label>552  / Wi 66 Pe