A detailed study of the genus Azollopsis

At: Canadian Journal of Botany, 52, 7 By: Sweet A. R., Hills L. V.

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A Devonian flora from Kentucky

At: Journal of Paleontology, 10, 3 By: Read C. B.

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At: Botanical Journal of the Linnean Society, 109, 2 By: Fanning U., Edwards D., Richardson J. B.

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At: Journal of the Washington Academy of Sciences, 25, 8 By: Arnold C. A.

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At: Bulletin of the Torrey Botanical Club, 32, 6 By: Berry E. W.

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At: Science Bulletin / Brigham Young University, Series, Biological Series, 14, 3, Article 1 By: Rushforth S. R.

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At: Palaeontographica, Abtheilung, B, Paläophytologie, 285, 1-3 By: Kvaček Z., Teodoridis V., Roiron P.

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At: Contributions from the Museum of Paleontology, University of Michigan, 19, 6 By: Arnold C. A., Daugherty L. H.

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At: The Botanique, 15, 1-2 By: Narkhede S. D., Bhowal M., Yadav A. M.

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At: Current science, 3, 6 By: Chowdhury K. A.