Heavenly Mathematics: Observing the Sun and
the Moon from Different Parts of the World, Helmer
Aslaksen
XLIV. Variation of the compass, as observed on board the Endeavour Bark, in a voyage round the World
1771 ◽
Vol 61
◽
pp. 422-432
◽
1779 ◽
Vol 69
◽
pp. 505-526
2014 ◽
Vol 2
(3SE)
◽
pp. 1-3