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  1. 1
    Plant life cycles /
    by Mertens, Thomas Robert, 1930-
    Published 1975
    Book
  2. 2
    Energy for life : photosynthesis and respiration /
    by Allamong, Betty D., 1935-
    Published 1976
    Book
  3. 3
    Plant anatomy /
    Book
  4. 4
    Principles of biosystematics /
    by Mertens, Thomas Robert, 1930-
    Published 1978
    Book
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