00407nam a22001337a 4500008004100000040005500041080002200096100002200118245005100140260004500191300001500236650001200251653001000263230619b        |||||||| |||| 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