Image Number D3190-1 |
A USDA technician collects vegetation samples in Mandan, North Dakota, in 1927.
Photo by USDA-ARS.
Please visit our Image Gallery.
Image Number D3190-1 |
A USDA technician collects vegetation samples in Mandan, North Dakota, in 1927.
Photo by USDA-ARS.
Please visit our Image Gallery.