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47. Pfeffer, W. : Pflanzenphysiologie. Leipzig, 1897-1904. 



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49. Ruben, S. and Kamen, M. D. : J. Applied Phys., 72:321, 1941. 



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58. VisHNiAC, W. and Ochoa, S.: J. Biol. Chem.. 795:501, 1952. 



59. Warburg, O.: Heavy Metal Prosthetic Groups. Clarendon Press, Oxford, 1949. 



60. Warburg, O. : Chemischer Mechanismus der C02-Assimilation und die Theorie 



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61. Warburg, O.: Science, ''28:68, 1958. 



62. Warburg, O. and Krippahl, G. : Zschr. Naturf., 70b:30\, 1955. 



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66. Warburg, O. and Negelein, E.: Biochem. Zschr., 7 70:66, 1920. 



67. Warburg, O., Schroder, W., Krippahl, G. and Klotzsch, H.: Angew. Chem., 



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68. Wassink, E. C: Proc. Koninkl. Nederl. Akad. Wetensch. C 52:412, 1949; C 54:- 



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69. Wassink, E. C: Research in Plwtosynthesis {Gatlinburg Conference 7955). Inter- 



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70. Wessels, J. S. C: Rec. trav. clum., 73:529, 1954. 



71. Whatley, F. R., Allen, M. B. and Arnon, D. I.: Biochim. Biophys. Acta, 76:605, 



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72. Whatley, F. R., Allen, M. B. and Arnon, D. L: Plant Physiol. Suppl., J2:iii, 



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