"nautical, h m. "
the star almanac for land surveyors for the year 1971: / h.m. nautical - 1 ed. - uk : her majesty 1971. - "xiv, 70p.; 25 cm."
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523. 89 her
the star almanac for land surveyors for the year 1971: / h.m. nautical - 1 ed. - uk : her majesty 1971. - "xiv, 70p.; 25 cm."
--
523. 89 her