000 00451nam a22001457a 4500
003 OSt
008 090807t xxu||||| |||| 00| 0 eng d
082 _a627.81.05:550.822
110 _aIndian standards institution
240 _aIndian standard
245 _aCode of practice for diamond core drilling for site investigation for river valley projects
260 _aNewDelhi
_bIndian standards institution
_c1973
653 _aIS:6926-1973
942 _cISI
999 _c336269
_d336269