TY  - BOOK
AU  - 
ED  - Symposium on Engineering Geology and Geotechnical Engineering
TI  - Engineering geology and geotechnical engineering: proceedings of the 25th Symposium on Engineering Geology and Geotechnical Engineering 
PY  - 1989///
CY  - Rotterdam
PB  - A. A. Balkema
KW  - Engineering geology
ER  -