The families and genera of vascular plants.  Volume 1,   Pteridophytes and gymnosperms / 
editors K. U. Kramer and P. S. Green. 
 - 404 pages :  illustrations ;  28 cm. 
 - The families and genera of vascular plants ;  v. 1 .
 - The families and genera of vascular plants ;  v. 1. .
<br/><br/> Series editor: K. Kubitski. 
<br/><br/><label>ISBN: </label>3540517944 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gymnosperms--Classification.<br/>Pteridophyta--Classification.
<br/><br/><label>Dewey Class. No.: </label>582.0012