Hartwig, G. . <br/><br/>
Marvels over our Heads /  Textual Documents 
G. Hartwig. 
 - 1st ed. / 
 - London :  Longmans Green & Co. ,  1894. 
 - x,142p. :  ill ;  18cm . 
<br/><br/><label>Subjects--Index Terms: </label>Geology G-Geology 
<br/><br/><label>Dewey Class. No.: </label>551.9  / H 259 M