7. mrraiENTS: general HTTROGER sources (continued) 



1952. (113) Northam, B. E., and Norrls, F. W., J. Gen. Microbiol. 5:502, I95I. (IIU) Wolf, F. T., Bull. Torrey Bot. Club 

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Bot. 51:283, 1912. (I69)rbld.,_5l*:21*3, 1911*. (17O) Vlrtanen, A. I., and Lalne, T., Nature 11*1:71*8, 1958. (171) Ibid., 

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(176) KeiUn, D., and Wang, Y., Nature, 155:227, 19U5. (177) Burrls, R. H., et al.. Soil Scl. Soc. Am. Proc. 7:258, 191*2. 

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 58:515, 191*9. (180) Lindstrom.E. S., Tove, S., and Wilson, P. W., Science 112:197, 1950. (l8l)LlndBtrom, E. S., Lewis, 

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 rend. Soc. blol. 103:1070, 195O. (201*) Glinka-Tschemomtzky, E., Blochem. Z. 265, IW*, 1933. (205) Gladstone, G. P., 

 Brit. J. Exp. Path. 20:189, 1959. (206) Mclntlre, F. C, Rlcker, A. J., and Peterson, W. H., J. Bact. U2:l, 191*1. 

 (207) Doudoroff, M., J. Bact. 1*1*:1*51, 19U2. (208) Burrows, W., J. Inf. Dis. 61t:l)*5, 1959. (209) Ibid., 20:126, 19U2. 

 (210) Mueller, J. H., J. Bact. 36:1*99, 1958. (211) Pappenhelmer, A. M., Jr. Mieller, J. H., and Cohen, S. Proc. Soc. 

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 Subbarow, Y., J. Bact., 1*0:695, 191*0. (2l8) Fildes, P., Brit. J. Exp. Path. 12:259, 1958. (219) Pelczar, M. J., and 

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 6:186, 1959. (252) Wood, H. G., Geiger, C, and Werkman, C. H., Iowa State Coll. J. Scl. 1|*:567, 19U0. (255) Snell, E. E., 

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 125:215, 191*0. (235) Snell, E. E., and Mitchell, H. K., Proc. Nat. Acad. Scl. U. S. £2:1, I9UI. (236) Hutchings, B. L., 

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 Am. Chem. Soc. 62:2281*, I9UI. (258) Clarke, M. F., Lechycka, M., and Ught, A. E., J. Biol. Chem. 11*2: 957. 191*2. (239) 

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 (251) Welton, J. P., Stockinger, H. E., and Carpenter, C. M., Science 22=572, 191*4. (252) Burk, D., and Homer, C. K., 

 WaUerstein Labs. Communications, No. 6, 5, 1959- (255) Tarr, H. L. S., J. Fisheries Res. Board Can. 5:265, 1941. (254) 

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