Helmuth Rogg
Helmuth Rogg
Oregon Department of Agriculture
Plant Protection and Conservation Program
635 Capitol Street NE
Salem,
OR
USA
97301
Papers:
90
Biological control of insect pests: Current projects by the Oregon Department of Agriculture
96
SANC: Promoting a harmonized, risk-based Systems Approach to Nursery Certification
108
SANC: Promoting a harmonized, risk-based systems approach to nursery certification
