Narrow search
Showing 1 - 4 of 4
Cover Image
Historical statistics of Pennsylvania's mineral industries
Schanz, John J.; Ridge, John D.; DeYoung, John H. - 1957
Persistent link: https://www.econbiz.de/10002214640
Cover Image
1759 - 1955
Schanz, John J. - 1957
Persistent link: https://www.econbiz.de/10002214674
Cover Image
1956 - 1960
Schanz, John J. - 1963
Persistent link: https://www.econbiz.de/10002214687
Cover Image
The use and interchangeability of fuels in Pennsylvania
Jaworek, W. Gibson; Schanz, John J. - 1961
Persistent link: https://www.econbiz.de/10002214893