Robertson, John, 1712-1776.
The elements of navigation; containing the theory and practice. With all the necessary tables. To which is added, A treatise of marine fortification. For the use of the Royal Mathe- matical School at Christ's Hospital, and the gentlemen of the navy ... By J. Robertson eee
London, Printed for J. Nourse, at the Lamb, opposite Katherine-Street, in the Strand. MDCCLIV. e175hs
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