United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with United States Department of Agriculture, Forest Service; the Louisiana Agricultural Experiment Station; and the Louisiana Soil and Water Conservation Committee
[By Michael C. Cooley ... [and others] ; United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee
United States Department of Agriculture, Natural Resources Conservation Services : in cooperation with Louisiana Agricultural Experiment Station and Louisiana Soil and Water Conservation Committee