000 00396nam a22001337a 4500
008 230619b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _a622.7:622.33
_b[M7]
245 _aResearch monograph
260 _aDhanbad:
_bDepartment of Fuel and Mineral Engineering,
_c1986
300 _a43p.
650 _aMonograph
942 _2udc
_cMON
999 _c44665
_d44665