TY  - BOOK
AU  - Rapp, A.
AU  - Hovérou, H. N. Le.
AU  - Lundholm, B.
TI  - Can desert encroachment be stopped
T2  - Ecological bulletin
U1  - 631.0915 
PY  - 1976///
CY  - Stockholm
PB  - United Nations. Environment Programme
KW  - Desiertos
KW  - Regiones áridas
ER  -