Brown, K.B. 1916 The specific effects of certain leaf-feeding Coccidae and Aphididae upon the pines.. Annals of the Entomological Society of America 9: 414-422.
Notes: Chionaspis pinifoliae and Aspidiotus abietis studied.
Brown, K.B. 1916 The specific effects of certain leaf-feeding Coccidae and Aphididae upon the pines.. Annals of the Entomological Society of America 9: 414-422.
Notes: Chionaspis pinifoliae and Aspidiotus abietis studied.