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29. Burch, George: A Method of Preparing Biologic Pluids for Counting of Radio- 

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30. McKay, B. P., and D. B. Zilversmit: An Automatic Sample Changer and Recorder 

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31. Hood, S. L.: Simple Pipetter, Anal. Chem., 24: 2020 (1952). 



32. Comar, C. L., Sam L. Hansard, S. L. Hood, M. P. Plumlee, and B. F. Barrentine: 

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33. Greenberg, D. M.: Personal communication. 



34. MacKenzie, A. J., and L. A. Dean: Measurement of P 32 in Plant Material by the 

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35. Elmore, W. C: Statistics of Counting, Nucleonics, 6: 26-34 (1950). 



36. Thomas, Alexander: How to Compare Counters, Nucleonics, 6: 50-53 (1950). 



37. Gleason, G. I., J. D. Taylor, and D. L. Tabern: Absolute Beta Counting at Defined 

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38. Burtt, Benjamin P.: Absolute Beta Counting, Nucleonics, 5: 28-43 (1949). 



39. Zumwalt, Lloyd R. : Absolute Beta Counting Using End-window Geiger-Mueller 

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40. Manov, George G.: "Status Report on Standardization of Radionuclides in the 

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41. Perry, W. E. : "Standardization of Radioactive Isotopes" (A Report on Progress 

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42. Graf, Walter L., C. L. Comar, and Ira B. Whitney: Relative Sensitivities of 

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43. Entenman, C, S. R. Lerner, I. L. Chaikoff, and W. G. Dauben: Determination 



of Carbon 14 in Fatty Acids by Direct Mount Technic, Proc. Soc. Exptl. Biol. 

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44. Bernstein, W., and R. Ballentine: Gas Phase Counting of Low Energj' Beta- 

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45. Solomon, A. K., and Hillard D. Estes: The Measurement of Radioactivity in 

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46. Anger, H. O.: Scintillation Counters for the Measurement of Radioactive Samples, 

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47. Davison, P. W., M. W. Green, M. H. Greenblatt, G. A. Morton, K. W. Robinson, 

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48. Maclntyre, W. J., W. F. Wirth, and T. E. Fessler: The Performance of Clinical 

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49. Birks, J. B.: "Scintillation Counters," McGraw-Hill Book Company, Inc., New 

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