TY  - BOOK
AU  - Thomas, R.W.
TI  - Modelling in geography: a mathematical approach 
SN  - 0389200492
U1  - 910.015195 
PY  - 1980///
CY  - London
PB  - Harper & Row Publishers
KW  - Geography
KW  - Mathematical models
N1  - Includes index
ER  -