Douglas Houghton Campbell

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The Structure and Development of Mosses and Ferns (Archegoniatae)

The Comparative Morphology of the Ophioglossaceae and Marattiaceae

The Eusporangiatae

Plates

David Starr Jordan

Henry David Gray

Fernando Sanford

Gordon Floyd Ferris

Henry Waldgrave Stuart

With a Conjecture as to "Love's Labour's Won,"

The Original Version of "Love's Labour's Lost,"

Douglas Houghton Campbell

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