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Poster encouraging planting trees as a method of soil conservation.
ARP18A28_335

Poster encouraging planting trees as a method of s...

New dust bowl program for southwest. Shown left to right are : Wallace
ARP17A31_374

New dust bowl program for southwest. Shown left to...

New dust bowl program for southwest. Washington, D.C
ARP17A08_151

New dust bowl program for southwest. Washington, D...