TY  - BOOK
AU  - Cuarles A S Hall and John Day 
AU  - Hall, Cuarles A S     Day, John 
TI  - Ecosystem Modelling in theory and Practice: An Introduction with case Histories 
U1  - 574.50184 
PY  - 1977///
CY  - Newyork
PB  - John Wiley & Sons
ER  -