TY  - BOOK
AU  - Macdonald ,Norman, x
AU  - x
TI  - Time lags in biological models: x
SN  - x  
U1  - 511.8/MAT 
PY  - 1978///
CY  - Berlin
PB  - Springer- Verlag
KW  - Mathemetical Models
KW  - Mathemetical models
ER  -