Home
Tools
Get Started
Start with Biocontrol
SIMP
World Catalog
Host Plant and Agents
Agent Information
Host Plant Information
Success Stories
Mapping and Distribution
Mobile Apps
Distribution Maps
Tools
Publications
Symposium Proceedings
Program Directory
Biocontrol in Your Backyard
How To
Videos
Field Guide
vault
About
About Us
FAQ
Contact Us
International Symposia on Biological Control of Weeds
Home
Proceedings
Lead Author Last Name: Zwölfer
Article
Lead Author
Year
Current investigations on phytophagous insects associated with thistles and knapweeds
Zwölfer, H.
1969
Problems involved in host-specificity and screening tests - Introduction to the subject
Zwölfer, H.
1969
Competition and coexistence in phytophagous insects attacking the heads of Carduus nutans L.
Zwölfer, H.
1971
Insects and thistle heads: Resource utilization and guild structure
Zwölfer, H.
1984
Topical colloquium
Zwölfer, Helmut
1971