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[152] Inleiding tot de Algemeene Geographie. Amsterdam, 1740.
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[156] Total Eclipses of the Sun. Boston, U.S., 1894.
[157] Astronomical Journal, vol. x. pp. 25, 185; vol. xi. pp. 5, 28, 57; vol. xii. p. 121; vol. xiii. p. 73; vol. xv. p. 73; vol. xvi. pp. 89, 175.
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