TY  - BOOK
AU  - CHRISTOPHERSON Robert W
AU  -  BIRKELAND Ginger H
TI  - Geosystems:  An introduction to physical geography   
SN  - 9781292057750
U1  - U2:(D6,9(B), Q0;Q5 
PY  - 2015///
CY  - London
PB  - Pearson          
KW  - Geography
ER  -