TY  - BOOK
AU  - General meting of the working Group on Granivorous Birds, IB
TI  - Productivity, population dynamics and systematics of granivorous birds
U1  - 598.883 G26P 
PY  - 1970///
CY  - Warszawa
PB  - PWN-Polish Scientific Publishers
KW  - SPARROWS - CONGRESSES
ER  -