@misc{Ludwik_Jankowiak_Summary_1973,
 author={Ludwik Jankowiak},
 address={Poznań},
 year={1973},
 contents={Strona 7},
 publisher={Poznań : IZ,},
 language={pol},
 title={Summary – Problems of regional economic activation taking as the example the European Common Market},
 type={text},
}