Re-evaluation of Syagrus loefgrenii Glassman and S. rachidii Glassman.

v.34:no.2(1971)

Ten new species of Erythroxylum (Erythroxylaceae) from Bahia, Brazil / Timothy Plowman.

n.s. no.19(1987)

On the structure and development of the vertebral column of Amia [by] O. P. Hay.

v.1:no.1(1895)

Preliminary descriptions of new rodents from the Olympic Mountains.

v.1:no.11(1899)

Austral Hepaticae XVIII : studies toward a revision of Telaranea subg. Neolepidozia (Lepidoziaceae) / John J. Engel, Rudolf M. Schuster.

n.s. no.14(1983)

Index to volume I, numbers 1 to 17.

v.1:no.18(1900)

Flora Costaricensis / William Burger, editor.

n.s. no.45(2005)

Pteridophyta of Peru. Rolla M. Tryon, Robert G. Stolze.

n.s. no.20(1989)

Synopsis of Hemichaena, including Berendtiella (Scrophulariaceae) [by] John W. Thieret.

v.34:no.7(1972)

A contribution to the ichthyology of Mexico.

v.3:no.6(1902)

The genus Eupomotis, by S. E. Meek.

v.3:no.2(1900)

Pteridophyta of Peru. Rolla M. Tryon, Robert G. Stolze ; with the collaboration of: R. James Hickey, Benjamin Øllgaard.

n.s. no.34(1994)

Studies in American plants, VI / Dorothy L. Nash.

v.36:no.9(1974)

Typification of Schlechter's Costa Rican Orchidaceae, types collected by A. Brenes / Kerry Barringer.

n.s. no.17(1986)

New meteorites / by Oliver Cummings Farrington --

v.5:no.1(1914)