Nordisk Forlag, 1973 Series
 
Billy #1/1973
Issue 1/1973
4 September 1973
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Billy #1/1974
Billy #2/1974
Billy #1/1975
Billy #2/1975
Billy #3/1975
Billy #4/1975
Billy #5/1975
Billy #1/1976
Billy #2/1976
Billy #3/1976
Billy #4/1976
Billy #5/1976
Billy #6/1976
Billy #7/1976
Billy #9/1976
Billy #10/1976
Issue 10/1976
30 November 1976
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