TY  - BOOK
AU  - OKUBO, Akira
TI  - Diffusion and ecological problems : mathematical models
U1  - 574.501 51 O-30D 
PY  - 1980///
PB  - Berlin
KW  - ECOLOGY -- MAHTEMATICAL MODELS
KW  - DIFFUSION -- MAHTEMATICAL MODELS
KW  - GEOGRAPHIC DISTRIBUTION OF ANIMALS AND P
ER  -