The nautical almanac for the year 2021.

Bibliographic Details
Corporate Authors:	Great Britain. Hydrographic Office, United States Naval Observatory
Format:	Book
Language:	English
Published:	Washington : U.S. Government Publishing Office, 2020.
Subjects:	Nautical almanacs. Ephemerides. Nautical astronomy. Nautical charts. Navigation > Handbooks, manuals, etc. Handbooks and manuals.

Holdings details from University of Pennsylvania
Call Number:	QB8.U6 N38 2019

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