Ptéridophytes

by André Lawalrée

Pteridophytes

by N. S. Parihar

Ptéridophytes =

by Edmund A. C. L. E. Schelpe

Morphology of Pteridophytes

by Kenneth R. Sporne

Pteridophytes

by Alan Reid Smith

Pteridophytes

by S. S. Bir

Azollaceae (Pteridophytes)

by Andre Lawalree

Pteridophyte hybrids

by Irving W. Knobloch

Pteridophytes

The morphology of pteridophytes

by K R. Sporne

Pteridophytes of Uttaranchal

by R. D. Dixit

Pteridophytes and Gymnosperms

by K. U. Kramer, P. S. Green

Indian fossil pteridophytes

by K. R. Surange

Pteridophytes of Venezuela

by Alan Reid Smith

Pteridophytes of Nepal

by Mahesh Kumar Adhikari, Keshab R. Rajbhandari

Pteridophytes of Guam

by Warren H. Wagner, David F. Grether

An annotated checklist of Indian pteridophytes

by C. R. Fraser-Jenkins, Kancheepuram N. Gandhi

Pteridophytes and gymnosperms

Southern Appalachian pteridophytes

by A. Murray Evans

The Pteridophytes of Ohio

by John H. Schaffner