TY  - GEN
AU  - Christman D.W.
AU  - Christman D. W. 
ED  - Colombia;Land use - United States;Regional problems
TI  - Andes 2020 A new  Startegy for the Challenges  o Colombia and the Region
SN  - 876093403
CY  - -NY.
KW  - Andes 2020 A new  Startegy for the Challenges  o Colombia and the Region
ER  -