000 00326nam a2200133Ia 4500
008 221011s9999 xx 000 0 und d
020 _a9788183564380
082 _a550 SIN
100 _aSingh, G
245 0 _aEarth science today
260 _aNew Delhi:
_bDiscovery Publishing House,
_c2015.
300 _a298 p.
942 _cBK
999 _c8648
_d8648