a cooperative project of the three Commonwealth Research Universities ; Temple University, editors, David J. Cuff, William J. Young ; University of Pittsburgh, [editor], Edward K. Muller ; The Pennsylvania State University, [editors] Wilbur Zelinsky, Ronald F. Abler
New York (N.Y.). Committee Appointed to Investigate Labor Conditions at the Berwind-White Company's Coal Mines in Somerset and Other Counties, Pennsylvania