TY - BOOK AU - Hawley Mones E Ed. TI - Coal : Social economic and environmental aspects T2 - Benchmark papers on energy.3 SN - 0879332379 U1 - X9(F551), L6 PY - 1976/// CY - Stroudsburg PB - Hutchinson and Rass KW - Coal Industry N1 - Two parts in one ER -