TY  - BOOK
AU  - Gilbrich, W.H.
AU  - A. Richts
AU  - K. Duscher
AU  - A. Gunther
TI  - 50 Years of hydro(geo)logical mapping activities / 
PY  - 2014///
CY  - Paris
PB  - UNESCO
KW  - Hydrology
N1  -  includes annex
ER  -