France. Bureau de recherches geologiques et minieres [BRGM]. Carte geologique 1:80.000 ; CG-3
Notes
France. Service de la carte geologique de France
Explanatory text: 1 sheet in MC folder.
North Decimal Degree 51.0354
South Decimal Degree 50.5766
East Decimal Degree 1.8817
West Decimal Degree 1.2662
Alternate title: Boulogne-Calais. Relief shown by hachures. Principal meridian: Paris. Longitude is given in centesimal values (100 grades = 90 degrees) .The Service de la carte geologique de la France was integrated to the BRGM to become the only France Service geologique national
Language note
In French.
OCLC
715403676
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