Land in Trust -- Film Description:
"A film on soil conservation, showing problems facing farmers in different areas of Canada. Many scenes of soil eroded, gouged and leached out by water, and of soil blowing away, prove the ominous necessity of understanding and preserving the land if we are to continue to reap vital crops. The development of soil through the centuries, the particular conservation problems in eastern and western Canada, and how soil fertility may be restored and maintained are dealt with in detail."
-- National Film Board of Canada

Source:
National Film Board of Canada. "NFB -- Land in Trust" National Film Board of Canada. http://www.onf-nfb.gc.ca/eng/collection/film/?id=16325.