00245nam a2200097Ia 4500008004100000041000800041100001400049245004100063260003500104300000800139240521s2011    xx            000 0 und d  aeng  aSINGH C.D  aENCYCLOPAEDIA OF EARTH SCIENCE VO- 2  bANMOL PUBLISHING PVT LTDc2011  a592