Author: Dirkzwager, G.;
Title: G. Dirkzwager M. Zoon's guide to the New Waterway for 1920, containing the time of high- and lowwater on the bar New Waterway for every day and night of the year, the rising, setting and changes of the moon a.s.o.
Description: Fortysixth year. Original paper cover. Complete with the five charts. 184 p. -good.-(The spine is damaged on the ends, lower side bare for 5 cm. Cover toned. Advertisement pages browned. Some small tears in the charts.).

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