Key for the field identification of brassica, potato and sugar beet aphids with photographic illustrations
By: [prepared by R.N.B. Prior and J.R. Morrison].
Contributors: Prior, R. N. B.; Morrison, J. R.; Plant Pathology Laboratory.
Publisher: Ministry of Agriculture, Fisheries and Food Plant Pathology Laboratory
Published: 1977
Place of publication: Pinner (Middlesex)
Language: eng