Insecticides and beneficial insects
By: A.L. Winfield.
Series: Lectures / Central Association of Bee-keepers; Lectures (Central Association of Bee-keepers)
Publisher: Central Association of Bee-keepers
Published: 1976
Place of publication: Ilford
Language: eng
Number of pages: 10
Subjects: Insect control -- Biological control.; Insecticides.
Notes: ' ... given ... on 1st March 1976' - p.1.