Total eclipse of the sun May 20 1947

· issued by the Nautical almanace Office, United States Naval Observatory ; under the authority of the Secretary of the Navy
Bok Engelsk 1946


Utgitt	Washington : U.S.G.P.O. , 1946
Omfang	48 s., 1 fold., pl.
Opplysninger	Supplement to the American ephemeri, 1947

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