Insecticides and beneficial insects
By: A. L. Winfield.
Contributors: Central Association of Bee-keepers.
Series: (Lecture leaflets)
Publisher: Central Association of Bee-Keepers
Published: 1976
Place of publication: Ilford, Essex (Eng.)
Language: eng
Number of pages: 10
Subjects: Insects, Injurious and beneficial.; Insecticides.
Notes: Cover title.