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Recent Discoveries of Cycadean Trunks in the Potomac Formation of Maryland

Lester F. Ward
Bulletin of the Torrey Botanical Club
Vol. 21, No. 7 (Jul. 20, 1894), pp. 291-299
Published by: Torrey Botanical Society
DOI: 10.2307/2477918
Stable URL:
Page Count: 9
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Notes and References

This item contains 3 references.

  • *
    Trans. Linn. Soc.26: 708, 1870
  • Monographs of the U. S. Geol. Survey, 15: 186-193, p1. clxxiv.-Zcxxx., 1889
  • *
    Mem. Real. Accad. Sci. Ist. Bologna (V.), 161-215, pl. 1-5