000 00304nam a2200097Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
245 0 _aGeological survey professional paper No: 321-323
260 _bU-S Govt. printing office
_aWashington
_c1959
942 _c1
999 _c102650
_d102650