TY  - GEN
AU  - Prasad,K.N.
TI  - An introduction to earth science: Heritage sites
SN  - 8131300242
U1  - 555.4 
PY  - 2006///
CY  - New Delhi
PB  - A P H Publishing
KW  - Earth Science
N1  - Includes bibliographical references and index
ER  -