Humphreys, W.J. . <br/><br/>
Physics of the Air /  Textual Documents 
W.J. Humphreys. 
 - 1st ed. / 
 - Philadelphia :  J.B. Lippincott Co. ,  1920. 
 - xi,665p. :  ill ;  24cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Geology Air G-Geology 
<br/><br/><label>Dewey Class. No.: </label>551.5  / H 888 P