1. Cocoa market trend No.281;Anon,1978
2. The Entomology of Radiation Disinfestation of Grain,1966
3. Economics of grain irradiation;Barnes,1966
4. Status of US Department of Agriculture research on irradiation disinfestation of grain and grain products;Tilton,1973
5. Evaluation of the economic feasibility of radiation preservation of selected food commodities;Balazs-Princz,1977