Sources of coal and types of stokes and burners used by electric public utility power plants : a report of the Institute of economics in co-operation with the United States Geological survey / by William Harvey Young
Half title: The Institute of economics of the Brooking institution. and The data were collected under the direction of A.H. Horton by the Division of power resources of the U.S. Geological survey, which issued, in August, 1930, a summary of the results. F. G. Tryon has supervised the work thoughout. cf. Director's pref.