00620nam a22001697a 4500008004100000040005500041080002200096100002200118245005100140260004500191300001500236650001200251653001000263942001200273999001700285952014800302230619b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a622.33:628.39bL6  aDoyle, William S   aDeep coal mining: bWaste disposal technology   aLondon: bNoyes Data Corporation, c1976  axi, 307p.   aMining   aCoal   2udccBK  c44642d44642  00102udc4066223362839_L670967671aNSLbNSLcGF/Rk-13/C-10/R-2d2023-06-19l0o622.33:628.39 L6p67269r2023-06-19 00:00:00w2023-06-19yBK