TY  - BK
AU  - Peterson,V.
AU  - Pike,K.S.
AU  - Retan,A.H.
TI  - Identification of aphids on small grains
T2  - Extension Bulletin - Washington State University, Cooperative Extension Service (USA).
PY  - 1982///
CY  - Pullman, WA (USA)
PB  - Washington State University. Cooperative Extension, 
KW  - Aphids
KW  - Cereals
KW  - AGROVOC
KW  - Classification
ER  -