Episode of Series “Problems of conservation”
Shows innovative ways to increase water supplies - percolation ponds, desalination of salt water, artificial weather control. Indicates that pollution control is equally important in conserving and purifying present water supplies.
Suitable for upper primary and lower secondary levels.
How to watch
In ACMI's collection
16mm film; Preservation Print (Section 5)
16mm film; Limited Access Print (Section 2)
16mm film; Access Print (Section 1)