Search Constraints

Start Over
Filtering by: Subject Insect pests -- Biological control -- Directories Remove constraint Subject: Insect pests -- Biological control -- Directories Non-Academic Affiliation Oregon State University. Agricultural Experiment Station Remove constraint Non-Academic Affiliation: Oregon State University. Agricultural Experiment Station

Search Results

  • Biological control of insects and weeds in Oregon

    Creator:
    Ritcher, Paul O.
    Abstract:
    Published April 1966. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
    Resource Type:
    Technical Report
    Full Text:
    on the biological control of several important forest insects. Contents Insect Parasites Insect