TY  - BOOK
AU  - Johnson, D.L.
AU  - Lewis, L.A
TI  - Land degradation: creation and destruction
T2  - The natural environment
SN  - 0-631-19244-1
U1  - 333.73137/JOH 
PY  - 1994///
CY  - Oxford
PB  - Blackwell
KW  - Man--Influence on nature
KW  - Land degradation--environmental aspects
ER  -