Protection of roads in Mauritania against sand encroachment.
1993
Details
Symbol***
TitleProtection of roads in Mauritania against sand encroachment.
Call number
UNDP(063.5)/M2
Date[Ouagadougou] : United Nations Sudano-Sahelian Office, June 1993.
Description
1 v. (various pagings) : ill., graphs, maps, tables