Geologic observations along a pipeline trench in Frederick County, Maryland

1984 ◽  
Author(s):  
William E. Davies ◽  
G.C. Ohlmacher ◽  
Brian Fox
Keyword(s):  
2003 ◽  
Author(s):  
Randall C. Orndorff ◽  
David J. Weary ◽  
Ronald A. Parker

1988 ◽  
Vol 75 (1) ◽  
pp. 239
Author(s):  
Joseph C. Morton ◽  
Grace L. Tracey ◽  
John P. Dern

1989 ◽  
Vol 55 (1) ◽  
pp. 107
Author(s):  
Elizabeth A. Kessel ◽  
Grace L. Tracey ◽  
John P. Dern

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