TY  - BOOK
AU  - Gregersen, Erik, ed.
TI  - Inner solar system: The sun, mercury, venus, earth, and mars
U1  - 523.2 G861I 
PY  - 2010///
CY  - New York
PB  - Britannica Education Publishing
N1  - 3372 21/12/2018 HBD18/7595 22/12/2018 Economics Project ( In the name of R K)
ER  -