TY  - BOOK
AU  - Krebs Robert E
TI  - Basics of earth science
T2  - Basic of the Hard Sciences
SN  - 0313319308
U1  - U211:(G:55), P3 
PY  - 2003///
CY  - London
PB  - Greenwood Press         
KW  - Earth Geography
N1  - Bibliography Chapterwise
ER  -