RARE Boow Depr, XE
-T71 -F18R
The ready observator.
Falck, N D > 4.1798.
The ready observator; or An infallible method for determining the latitude at sea: by altitudes of the sun ... The whole rendered peculiarly easy for practice, and annexed with a@ compleat and correct sett of all the necessary tables ... By N.D. Falck.
London: Printed for the author and sold by Wells and Grosvenor,stationers,N.11,in Cornhill; by the mathematical instrument-makers,and all booksellers in the sea-port-towns in Great
& (See next card) MB