A companion to cultural geographyJames S. Duncan, Nuala Christina Johnson, Richard Schein, John Agnew, James Duncan, Jamie Winders · First published 2003Open the Tome
Structure and development of Pilularia minuta, Durien manuscriptDuncan S. Johnson · First published 1933Open the Tome
The curvature, symmetry and homologies of the sporocarps of Marsilea and PilulariaDuncan S. Johnson · First published 1933Open the Tome
Littoral vegetation on a headland of Mt. Desert Island, MaineDuncan S. Johnson, Alexander F. Skutch · First published 1928Open the Tome
The influence of insolation on the distribution and on the developmental sequence of the flowers of the giant cactus of ArizonaDuncan S. Johnson · First published 1924Open the Tome
Notes from the botanical laboratories of the Johns Hopkins UniversityDuncan S. Johnson, Harlan H. York · First published 1912Open the Tome
List of biological serials in the libraries of BaltimoreDuncan S. Johnson · First published 1902Open the Tome
The development of the embryo-sac in Piper and HeckeriaDuncan S. Johnson · First published 1902Open the Tome
The germination of the seed of Peperomia and certain other genera [an abstract]Duncan S. Johnson · First published 1902Open the Tome
On the endosperm and embryo of Peperomia pellucidaDuncan S. Johnson · First published 1900Open the Tome
On the development of the leaf and sporocarp in Marsilia quadrifolia, L.Duncan S. Johnson · First published 1898Open the Tome
