TY  - BOOK
AU  - Gregersen, H.M. 
AU  - Brooks, K.N.
AU  - Hamilton, L.S.
TI  - Guidelines for economic appraisal of watershed management projects: FAO Conservation Guide No.16
PY  - 1987///,
CY  - Rome
PB  - Food and Agriculture Organization
UR  - http://www.fao.org/3/T0038E/T0038E00.htm
ER  -