@misc{Zbigniew_A._Maciąg_System_1986,
 author={Zbigniew A. Maciąg},
 address={Poznań},
 year={1986},
 contents={Strona 15-36},
 publisher={Poznań : IZ,},
 language={pol},
 title={System taryfowy w RFN},
 type={text},
}