United States Department of Agriculture, Soil Conservation Service ; in cooperation with the Louisiana Agricultural Experiment Station and the Louisiana Soil and Water Conservation Committee
United States Department of Agriculture, Soil Conservation Service, in cooperation with Louisiana Agricultural Experiment Station and Louisiana State Soil and Water Conservation Committee
United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with the Louisiana Agricultural Experiment Station, and the Louisiana Soil and Water Conservation Committee
United States Department of Agriculture, Soil Conservation Service ; in cooperation with the Louisiana Agricultural Experiment Station and the Louisiana State Soil and Water Conservation Committee