Graczyk, Ryszard (1926- ).

European bison, Bison bonasus bonasus (Linnaeus, 1758), in Wielkopolska by Ryszard Graczyk( Book )

4 editions published in 1987 in English and Polish and held by 5 WorldCat member libraries worldwide

Ochrona ptaków i nietoperzy w lasach by Ryszard Graczyk( Book )

1 edition published in 1992 in Polish and held by 2 WorldCat member libraries worldwide

Badania nad zmiennością, biologią i znaczeniem gospodarczym kosa (Turdus merula L.) = Die Untersuchungen über Variabilität, Biologie und wirtschaftliche Bedeutung der Amsel by Ryszard Graczyk( Book )

1 edition published in 1961 in Polish and held by 2 WorldCat member libraries worldwide

Ochrona ptaków i nietoperzy w lasach by Ryszard Graczyk( )

1 edition published in 1994 in Polish and held by 1 WorldCat member library worldwide

Ecological and ethological aspects of the synanthropization of birds by Ryszard Graczyk( Book )

1 edition published in 1982 in English and held by 1 WorldCat member library worldwide

Materiały III międzynarodowego sympozjum Hodowla i restytucja dropia Otis tarda L., w Europie( Book )

1 edition published in 1980 in Polish and held by 1 WorldCat member library worldwide

Badania nad występowaniem i stanem ilościowym kosa (Turdus merula L.) w Polsce by Ryszard Graczyk( Book )

1 edition published in 1959 in Polish and held by 1 WorldCat member library worldwide

Badania nad występowaniem i stanem ilościowym kosa (Tusrdus merula L.) w Polsce = Foschungen über das Auftreten und den quantitativen Stand der Amsel (Turdus merula L.) in Polen by Ryszard Graczyk( Book )

2 editions published in 1959 in German and Polish and held by 1 WorldCat member library worldwide