000			00430nam a2200169Ia 4500
008			131223s9999 xx 000 0 und d
040			_aISI KOLKATA
041			_aEnglish
082			_a551.71 _bGS.P.3
245			_aGeologic systems _bThe precambrian
260			_aLondon _bInterscience _c1967
300			_aviii,325p.
650			_aArcheozoic era
650			_aGeologic system
700			_aRankama Kalervo _4ed.
942			_cBK
999			_c61591 _d61591