@misc{Piotr_Kalka_Summary_1973,
 author={Piotr Kalka},
 address={Poznań},
 year={1973},
 contents={Strona 6},
 publisher={Poznań : IZ,},
 language={pol},
 title={Summary – The development of science and technology in the programmes and practice of the European unions},
 type={text},
}