TY  - GEN
AU  - Griesbach, J. C.
TI  - Photo-library on soil erosion processes: pictorial annex to the guidelines for mapping of erosion processes
SN  - 9536429497
PY  - 2002///
PB  - United Nations Environment Programme
KW  - Sols
KW  - Érosion
KW  - Méditerranée (région)
KW  - Photographies
ER  -