题名:
Using Sulfur hexafluoride as a gaseous tracer to study ventilation systems in mines   / E. D. Thimons et al. ,
ISBN:
价格: ¥present
语种:
eng
载体形态:
22 p.
出版发行:
出版地: U. S. 出版社: Department of the Interrior 出版日期: 1974
主要责任者:
Thimons
索书号:
1