Contribution to the Knowledge of the Interrelations of the Bumblebees of Illinois with Their Animate Environment.*
- 1 June 1926
- journal article
- Published by Oxford University Press (OUP) in Annals of the Entomological Society of America
- Vol. 19 (2) , 203-235
- https://doi.org/10.1093/aesa/19.2.203