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LITERATURE CITED 
Riker, A. J. 
1923. SOME RELATIONS OP THE CROWN-GALL ORGANISM TO ITS HOST TISSUE. 
In Jour. Agr. Research, v. 25, p. 119-132, 5 pi. Literature cited, p. 132. 
1923. THE LOCATION OP THE CROWN-GALL ORGANISM IN ITS HOST TISSUES. 
In Phytopathology, v. 13, p. 43. 
1923. SOME MORPHOLOGICAL RESPONSES OP THE HOST TISSUES TO THE CROWN- 
GALL organism. (Abstract.) In Phytopathology, v. 13, p. 43 - 
Smith, Erwin F. 
1912. THE STRUCTURE AND DEVELOPMENT OP CROWN-GALL I A PLANT CANCER. 
U. S. Dept. Agr. Bur. Plant Indus. Bui. 255, 60 p., 2 fig. 109 pi. 
1916. STUDIES ON THE CROWN-GALL OF PLANTS. ITS RELATION TO HUMAN 
cancer. In Jour. Cancer Research, v. 1, p. 231-309, 25 pi. Bibliog¬ 
raphy, p. 258. 
1917. mechanism of tumor growth in crown-gall. In Jour. Agr. Re¬ 
search, v. 8, p. 165-188, pi. 4-65. Literature cited, p. 185-186. 
1920. production op tumors in the absence op parasites. In Arch. Der¬ 
matology and Syphilology, v. 2, p. 176-180. 
1922. APPOSITIONAL GROWTH IN CROWN-GALL TUMORS AND IN CANCERS. In 
Jour. Cancer Research, v. 7, p. 1-105,4fig-, 28 pi. References, p. 47 “ 49 - 
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