@misc{Ptaszycki_Stanisław_(1853-1933)_Bibljoteki_[ca,
 author={Ptaszycki, Stanisław (1853-1933)},
 title={Bibljoteki i archiwa petersburskie : luźne notatki},
 address={[S.l.]},
 year={[ca 1883]},
 language={pol},
 type={broszura},
 publisher={[s.n.]},
}