Yazar
Herbert H Fields
2 cilt bulundu.
Cilt sonuçları
Commercial-quality gas from the multipurpose borehole located in the Pittsburgh coalbed
Herbert H Fields · U.S. Dept. of the Interior, Bureau of Mines
14 sayfa · 1975
Mine gases / Natural gas
Degasification and production of natural gas from an air shaft in the Pittsburgh coalbed
Herbert H Fields · U.S. Dept. of the Interior, Bureau of Mines
23 sayfa · 1976
Mine gases / Natural gas