The Verzeichnis der im deutschen Sprachraum erschienenen Drucke des 17. Jahrhunderts (in English: Bibliography of Books Printed in the German Speaking Countries from 1601 to 1700), abbreviated VD17, is a project to make a retrospective German national bibliography for the 17th century. The project was initiated in 1996 and planned to continue for 10–12 years. It is financed by the Deutsche Forschungsgemeinschaft (German Research Foundation). As of early 2007, the database contains more than 250,000 titles.
There is a corresponding German national bibliography for the 16th century, known as VD 16, which was compiled during the period 1969-1999, and another for the 18th century is planned.
See also[edit]
External links[edit]
Media related to VD 17 at Wikimedia Commons- VD17, official website
- VD17, search page
- VD18-Datenbank: Das Verzeichnis Deutscher Drucke des 18. Jahrhunderts
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Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction