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  1920's and 1930s.
Technical Journal from the UK from the 1920's and 1930's.
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Year 1920 1921 1922 1923 1924
  Nov
1925 1926 1927 1928 1929
Apr Mar Jul
Aug
Feb Sept
Year 1930 1931 1932 1933 1934
  Nov Apr
May
Nov
May
Aug
Sept
Dec
Jan
Feb
Jun
Sept
Nov
 
1935 1936 1937 1938 1939