Bedrock map of Montgomery county, Maryland:
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Bibliographic Details
Format: Map
Language:English
Published: Reston, Va. U.S. Geological Survey 1975
Series:United States Geological Survey: Miscellaneous investigations series I-920-D
Subjects:
Item Description:Inselkt. - Mit geolog. Profil
Physical Description:1 Kt. mehrfarb. Blattgr. 122 x 101 cm, gefaltet

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