“…In addition to explaining trends and stability of food prices, it discusses the supply relation for marketing services, a knowledge of which would enable economists to obtain better insight into the total costs (including costs to consumers) of alternative farm programs. Previous researchers in this area-Burk [4], Bunkers and Cochrane [3], Daly [5], Fourt [7], and Schultz [17]-have explained the decline in the farm share in terms of a larger income elasticity for marketing services than for farm products. One contribution of the present study is the introduction of a price variable for aggregate farm-food marketing services.…”