Two dye fastness tests exposed to sunlight in India
1905-1915
1905-1915
1918-1923
1909
1906
1908
1907
1905
1938
1916-1917
1909
1912
1937
1906
1928
1912-1913
1916
1910-1917
1912-1914
1936
1909-1912
1909-1916
1930
1956
1938
1912-1913
1912
1942
1930
1914-1916
1938
1938
1913-1914
1912-1914
1912
September 1929
1909-1910
Feb 1932-July 1934
1915-1925
1912
1928-08-16
1935-41
1913
1929