@book{27561,
	author = {Myers, W. M.},
	title = {... Problems and trends in the mineral industries of Pennsylvania /},
	publisher = {School of Mineral Industries, The Pennsylvania State College,},
	year = {1939.},
	series = {Pennsylvania.  State College.  Mineral Industries Experiment Station.  Bulletin 17 [i.e. 27]},
	address = {State College, Pa.,}
}