Duck Production Studies on the Prairie Potholes of South Dakota
Description:
From introduction: "Determine the extent, distribution, and numbers of small water areas formerly and now present in the prairie pothole region of the Dakotas and Minnesota; to determine their importance to wildlife, the factors bringing about their disappearance, and to develop, if possible, methods for their preservation, if that appears warranted."
Date:
March 1956
Creator:
Evans, Charles D.