Observations on the Life-Cycle of the Balsam Woolly Aphid, Adelges piceae (Ratz.), in the Willamette Valley of Oregon
- 1 April 1959
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 91 (4), 208-212
- https://doi.org/10.4039/ent91208-4