Walker, Jeffrey S.
Case study of the effects of longwall mining induced subsidence on shallow ground water sources in the Northern Appalachian Coalfield Walker, Jeffrey S. - Washington Bureau of mines 1988
ESTUDIOS DEL CASO
MINERIA
622
Case study of the effects of longwall mining induced subsidence on shallow ground water sources in the Northern Appalachian Coalfield Walker, Jeffrey S. - Washington Bureau of mines 1988
ESTUDIOS DEL CASO
MINERIA
622