K 10
svn:author
V 7
matusik
K 8
svn:date
V 27
2004-08-27T07:36:31.000000Z
K 7
svn:log
V 138
Set tech_cost_double_year to 0 in history ruleset. Lack of explicitly listed tech_cost_double_year reported by Marko Lindqvist in PR#9762

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