Smith, J. L. (1966). The Liverworts pallavicinia and symphyogyna and their conducting system. University of California.
Chicago-referens (17:e uppl.)Smith, James L. The Liverworts Pallavicinia and Symphyogyna and Their Conducting System. Berkley: University of California, 1966.
MLA-referens (9:e uppl.)Smith, James L. The Liverworts Pallavicinia and Symphyogyna and Their Conducting System. University of California, 1966.
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