659,928 INTERNATIONAL International studies on sparrows / Institute of Ecology, Polish Academy of Sciences , International Association for Ecology, Working Group on Granivo-rous Birds-INTECOL. - Dziekanów Leśny : Oficyna Wydawnicza Instytutu Ekologii PAN. - 21 cm Vol. 20-21 [93-94] ed. by Working Group on Grani-vorous Birds-INTECOL ; ed. Jan Pinowski ; co-ed. David T. Parkin. - 1995. - 42, [2] s. : wykr. ISBN 83-903232-8-1