426 RADIOISOTOPES IN BIOLOGY AND AGRICULTURE 



5. Leddicotte, G. W., and S. A. Reynolds: Neutron Activation Analysis: A Useful 

 Analytical Method for Determination of Trace Elements, ORNL-1443 Feb 2'^ 

 1953. ' ■ ' 



6. Leddicotte, G. W., and S. A. Reynolds: The Determination of Trace Elements by 

 Neutron Radioactivation Analysis, ASTM Bull. No. 188, February, 1953. 



7. Brooksbank, W. A., G. W. Leddicotte, and H. A. Mahlman: Analysis for Trace 

 Impurities by Neutron Activation, ORNL-CF-53- 10-52, Oct. 23, 1953. 



CITED REFERENCES 



8. Tobias, C. A.: Analysis of Trace Elements in Biological Tissue by Means of 

 Induced Radioactivity, Monthly Progress Report, NDP 48A, Div 2 June 1947- 

 also AECD-2099 B. > > . 



9. Brues, A. M., and 0. H. Robertson: Quarterly Report from Argonne National 

 Laboratories, ANL-4108, Nov. 1, 1947. 



10. Clark, Herbert M., and Ralph T. Overman: Determination of Trace Amounts of 

 Elements by Radioactivation Analysis, MDDC-1329, Sept. 24, 1947. 



11. Huffman, John R.: The Materials Testing Reactor as an Irradiation Facility 

 AECD-3587, July 6, 1953. 



12. Hudgens, J. E., and L. C. Nelson: Determination of Small Concentrations of 

 Indium by Radioactivation, Anal. Chem., 24: 1472-1475 (1952). 



13. Smales, A. A., and B. D. Pate: Determination of Submicrogram Quantities of 

 Arsenic by Radioactivation, Ajial. Chem., 24: 717-721 (1952). 



14. Leddicotte, G. W., and G. E. Boyd: Personal communication. 



15. Meinke, W. Wayne, and Richard E. Anderson: Activation Analysis Using Low 

 Level Neutron Sources, Anal. Chem., 25: 778-783 (1953). 



16. "Oak Ridge National Laboratory Catalog and Price List: Isotopes, Radioactive- 

 Stable," Jan. 2, 1953. 



17. Leddicotte, G. W.: Personal communication. 



18. Smales, A. A., and B. D. Pate: The Determination of Sub-microgram Quantities 

 of Arsenic by Radioactivation, II, Analyst, 77: 188-195 (1952). 



19. Smales, A. A., and B. D. Pate: The Determination of Sub-microgram Quantities 

 of Arsenic by Radioactivation, III, Analyst, 77: 196-202 (1952). 



20. Keynes, R. D., and P. R. Lewis: The Sodium and Potassium Content of Cephalo- 

 pod Nerve Fibres, J. Physiol. London, 114: 151-182 (1951). 



21. Tobias, Cornelius, and Rayburn W. Dunn: Analysis of Microcomposition of 

 Biological Tissue by Means of Induced Radioactivity, Science 109: 109-113 

 (1949). 



22. Brooksbank, W. A., and G. W. Leddicotte: Ion Exchange Separation of Trace 

 Impurities, ORNL-CF-53-5-228, May 1, 1953. 



23. Yagoda, Herman: "Radioactive Measurements with Nuclear Emulsions," John 

 Wiley & Sons, Inc., New York, 1949. 



24. Brown, Harrison, and Edward Goldberg: The Neutron Pile as a Tool in Quantita- 

 tive Analysis; The Gallium and Palladium Content of Iron Meteorites Science 

 109: 347-353 (1949). 



25. Delbecq, C. J., L. E. Glendenin, and P. H. Yuster: Determination of Thallium by 

 Radioactivation, Anal. Chem., 25: 350-351 (1953). 



