Tag 'start_date = 1976'

Value histogram for key 'official_ref'

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• 1: NK155
• 1: NK147
• 1: NK158
• 1: NK047
• 1: NK157
• 1: NK146
• 1: NK141
• 1: NK074
• 1: NK140
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• 1: Kr078
• 1: NK142