A very easy and short method of finding the true distance between the moon and sun, or a fixed star, for the purpose of determining the longditude By J. Greensword, ...
Greensword, J.
London : printed for the author, and sold at Mr. Steel's; Messrs. Gilbert, Wright, and Hooke's, Mathematical instrument makers, London; J. Delahoy's, (Kent Printing-Office,) Deptford; and at the author's,
[1797?]
The watermark is dated 1797.
ESTC