TY  - BOOK
AU  - Watson, David F.
AU  - Watson, David F.
TI  - Contouring : A Guide To The Analysis And Display Of Spatial Data (With Programmes On Diskette)
U1  - DCS1 
PY  - 1996///
CY  - Oxford
PB  - Pergamon
KW  - DCS1
ER  -