Key for the field identification of apterous and alate cereal aphids with photographic illustrations
By: (R. N. B. Prior).
Contributors: Harpenden (England). Plant Pathology Laboratory.
Publisher: Plant Pathology Laboratory
Published: 1975
Place of publication: Harpenden, (Eng.)
Language: eng
Number of pages: 19
Subjects: Plant-lice -- Identification.
Notes: Cover title.

At head of title: Agricultural Development and Advisory Service.