scholarly journals SF? tracer gas used to trace airflow through abandoned mine workings

1985 ◽  
Author(s):  
A W Stokes
Kerntechnik ◽  
2012 ◽  
Vol 77 (3) ◽  
pp. 187-190 ◽  
Author(s):  
W. Löbner ◽  
C. Schramm ◽  
J. Regner ◽  
K. Geringswald ◽  
F. Leichsenring ◽  
...  

2000 ◽  
Vol 57 (1-2) ◽  
pp. 39-52 ◽  
Author(s):  
Laurance J. Donnelly ◽  
David M. McCann

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