The predacious Coccinellidae associated with the wheat aphid, Schizaphis graminum (Rond.) in the Orange Free State.
Published: 1969
Place of publication: [Stellenbosch]
Language: eng
Number of pages: 318
Subjects: Ladybugs.; Greenbug -- Biological control.; Wheat -- Diseases and pests -- South Africa -- Orange Free State.
Notes: Thesis--University of Stellenbosch.