The fading tradition: The declining use of magnetic declination in Dutch pelagic navigation
Jonkers, A.R.T. (1998). The fading tradition: The declining use of magnetic declination in Dutch pelagic navigation, in: van Royen, P.C. et al. Frutta di Mare: Evolution and revolution in the maritime world in the 19th and 20th centuries - Proceedings of the Second International Congress of Maritime History, 5-8 June 1996, Amsterdam and Rotterdam, The Netherlands. pp. 39-63
In: van Royen, P.C.; Fischer, L.R.; Williams, D.M. (Ed.) (1998). Frutta di Mare: Evolution and revolution in the maritime world in the 19th and 20th centuries - Proceedings of the Second International Congress of Maritime History, 5-8 June 1996, Amsterdam and Rotterdam, The Netherlands. Batavian Lion International: Amsterdam. ISBN 90-6707-475-6. 222 pp., more
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