000 00308nam a2200109Ia 4500
008 160710s1958 xx 000 0 und d
100 _aINDIA GEOLOGICAL SURVEY
245 _aBULLETINS OF THE GEOLOGICAL SURVEY OF INDIA-ENGG GEOLOGY
260 _bCANTRAL RAILWAY TUNNEL
_c1958
300 _a43
942 _2ddc
_cB
999 _c22993
_d22993