Johannsen, Albert, 1871-1962. <br/><br/>
Manual of petrographic methods 
Albert Johannsen 
 - New York  :  Hafner Publishing Company,  1968 
 - xxviii, 649 p. :  ill. ;  24 cm. 
<br/><br/> Reprint of the 2d ed., published in 1918. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petrology<br/>Optical mineralogy