000 00282nam a22000977a 4500
008 210927b |||||||| |||| 00| 0 eng d
245 _aGeosciences and Mining Journal
_bSeries- 02
260 _aThimphu :
_bDepartment of Geology and Mines,
_c2021.
300 _a61 p.
_c24 cm.
942 _2ddc
999 _c8898
_d8899