Keyword: Petroleum/natural gas

Erdöl/Erdgas

Petroleum/natural gas

Petroleum/natural gas is used as descriptor

 
Identifier Title Date Level of description Other information
EBA 2/682 Akten Ernst Müller 1941 – 1957 File: 1 file Standard period of protection
EBA 2/689 Erdöl und Erdgas 1961 – 1967 File: 1 file Standard period of protection
GFA 9/2.15 GF Zeitung, Nr. 1, Februar/März 1976 1976 File: 1 file digitized | public
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