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Fig. A.1


First row: Nova Sgr 1893, Nova Sgr 1897, Nova Sgr 1899 and Nova Sco 1901. Second row: Nova Sgr 1901, Nova Sgr 1905, Nova Cir 1906 and Nova Sco 1906. Third row: Nova Sgr 1910, Nova Sgr 1914c, Nova Sgr 1917 and Nova Sgr 1919. Fourth row: Nova Sco 1922 , Nova Sgr 1924, Nova Sgr 1926, Nova Sgr 1926a. Last row: Nova Sco 1928, Nova Sgr 1928, Nova Sgr 1930 and Nova Cen 1931.

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