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References

  • 1
    Appleman, C. O. Some observations on catalase. Bot. Gaz. 50, 18292. 1910.
  • 2
    Heinicke, A. J. Factors influencing catalase activity in apple leaf tissue. Cornell Univ. Agr. Exp. Sta. Mem. No. 62. 1923.
  • 3
    Johnson, Edna L. Effect of X-rays upon growth, development, and oxidizing enzymes of Helianthus annuus. Bot. Gaz. 82, 373402. 1926.
  • 4
    Johnson, Edna L. Growth and germination of sunflowers as influenced by X-rays. Amer. Journ. Bot. 15, 6576. 1928.
  • 5
    Johnson, Edna L. Effect of X-radiation upon growth and reproduction of tomato. Plant Physiology, 6, 68594. 1931.