@book{ 0-666062625, title = {Coal resources of the Hazard District, Kentucky: Breathitt, Knott, Leslie, Perry and parts of Harlan and Letcher Counties}, series = {Energy resource series}, series = {IMMR}, author = {Brant, Russell A.}, address = {Lexington, KY}, publisher = {University of Kentucky Institute for Mining and Minerals Research}, year = {1983}, isbn = {0866070192}, isbn = {9780866070195}, language = {English}, note = {"WO 1071. - "September, 1983}, note = {"September, 1983}, url = {https://katalog.ub.tu-freiberg.de/Record/0-666062625} }