TY  - BOOK
AU  -  Jensen,Axel Martin
TI  -  Protection of roads in Mauritania against sand encroachment : :  a report prepared for UNSO / 
U1  -  625.74 
PY  - 1993///
CY  -  New York : 
PB  -  UN Publication, 
KW  -  Highway planning
N1  -  Includes bibliographical references (p.B!- B5)
ER  -