TY  - BOOK
AU  - Szafer,Władysław
AU  - Michajłow,Włozimierz
TI  - Protection of man's natural environment: a collective work initiated and planned by Władysław Szafer,
AV  - QH75 .S95
PY  - 1973///
CY  - Warszawa
PB  - PWN-Polish Scientific Publishers
N1  - At head of title: Polish Academy of Sciences. Committee on the Protection of Nature and Natural Resources. Nature Protection Research Centre
ER  -