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Welke ster is dat ?
Met 48 sterrekaarten, een tabel tot het bepalen van de sterrebeelden op elk tijdstip, 100 figuren en 8 platen.
Exercises in Practical Astronomy Using Photographs
A modest level of mathematics is required, specifically the use of logarithms and of simple trigonometrical functions. A knowledge of physics beyond the general descriptive level of standard elementary astronomy textbooks, is not called for.…
Introduction to Experimental Astronomy
an observational workbook
Introduction to Experimental Astronomy
an observational workbook
