@book{bhlitem100441, title = {Cooperative economic insect report }, volume = {v. 6 (Jan.-June 1956)}, copyright = {Permission_to_digitize_granted_by_rights_holder}, url = {https://www.biodiversitylibrary.org/item/100441}, note = {https://www.biodiversitylibrary.org/bibliography/45971}, publisher = {Hyattsville, MD. [etc.], Plant Protection and Quarantine Programs Animal and Plant Health Service, }, author = {United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. and United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs. and United States. Bureau of Entomology and Plant Quarantine. and United States. Bureau of Entomology and Plant Quarantine. and United States. Plant Pest Control Branch. and United States. Plant Pest Control Division and United States. Plant Pest Control Division.}, year = {1951}, pages = {742}, keywords = {Beneficial insects|Control|Insect pests|Periodicals|United States|}, }