A.Trees and climate
B.Trees and water
C.Trees and crop protection in arid and semi-air areas
D.Biological reclamation for water logged and saline soils
E.All of the above
A.Trees and climate
B.Trees and water
C.Trees and crop protection in arid and semi-air areas
D.Biological reclamation for water logged and saline soils
E.All of the above