RESINITE IN BITUMINOUS COALS
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[1] D. Murchison,et al. The occurrence of resinite in bituminous coals , 1963 .
[2] J. M. Jones. Method for establishing a liquid column of graded density , 1961 .
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[1] D. Murchison,et al. The occurrence of resinite in bituminous coals , 1963 .
[2] J. M. Jones. Method for establishing a liquid column of graded density , 1961 .