Petrology for students 

 - 526p. 
<br/><br/> This is an book reviews of Petrology for students. By A. Harker. 7th ed.  Pp. 300 with 100 Text-figures. Cambridge University Press, 1935. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petrology - Teaching and learning