Vol.1-3 issued by United States. Bureau of Chemistry and Soils. Insecticide Division; v.8, no.1-3 by U.S. Bureau of Entomology and Plant Quarantine. Insecticide Division; v.8, no.4-v.26, no.1 by U.S. Bureau of Entomology and Plant Quarantine. Division of Insecticide Investigations.