TY  - BOOK
AU  - Essig E O
AU  -  Abernathy F
TI  - Aphid genus periphyllus: A systematic biological and ecological study
U1  - K8772, J2-;1 
PY  - 1952///
CY  - Berkeley
PB  - University of California       
KW  -  Arthropoda
KW  - Zoology
ER  -