food stops / problem/solution / fewer chemicals / Chemical pesticides / harmful chemicals / Chemical fertilizers / abundant food supply / satellite positioning system / chemicals / soluble food / dangerous chemicals / food people / food / using chemicals / /
Organization
Oklahoma State Department of Education / federal government / Soil Erosion Service / Oklahoma Department of Agriculture / Civilian Conservation Corps / Oklahoma Cooperative Extension Service / /
Person
Mystery / Jean Craighead / /
Position
Farmer / reading Page The Farmer / Ag / Harper / /