Hi,

I have two datasets stored in tab-separated format in the following way
file1:
country           year1        year2
Germany        var1          var1
Hungary         var1          var1

file2:
country           year1        year2
Germany        var2         var2
Hungary         var2         var2

I can easily read in these files, but how can I merge them as a panel
dataset?

Thanks,
Viktor

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