TY  - BOOK
AU  - Jeffers,John N.R.
TI  - An introduction to systems analysis : with ecological applications
U1  - 574.501 84 JEF  
PY  - 1978///.
CY  - London : 
PB  - Edward Arnold Publishers Limited., 
KW  - Ecology--Mathematical models
KW  - System analysis
N1  - Includes index.
ER  -