TY  - BOOK
AU  - Lawrance C J
TI  - Terrain evaluation manual
T2  - State Of The Art Review, 7. Great Britain Transport Research Laboratory, Publications
U1  - U218g, N3/TD 
PY  - 1993///
CY  - London
PB  - H M S O India      
KW  - Geomorphology
ER  -