JERZAK LESZEK [red.] 720,026 INDYKIEWICZ PIOTR; FETISOV SERGEI A., JERZAK LESZEK International studies on sparrows : bibliography of the genus passer XIII /By P[iotr] Indykiewicz, S[ergei] A. Fetisov, L[eszek] Jerzak ; Institute of Ecology, Polish Academy of Sciences International Association for Ecology. - Dziekanów Leśny : IE PAS, 1990. - 100 s. (Working Group of Granivorous Birds - Intecol ; vol. 17, nr. 1-2)