Gregory, K.J. . <br/><br/>
Drainage Basin From and Process: A geomorphological approach /  Textual Documents 
K.J. Gregory, D.E. Walling. 
 - London :  Edward Arnold ,  1973. 
 - 446p. :  ill. ;  22cm . 
<br/><br/>Bib. 
<br/><br/><label>Subjects--Index Terms: </label>Earth Science 
<br/><br/><label>Dewey Class. No.: </label>511.4