An index of patented mothproofing materials
By: by R.C. Roark
Contributors: United States. Bureau of Entomology and Plant Quarantine. Insecticide Division
Published: 1931
Place of publication: [Washington]
Language: eng
Number of pages: 125
Subjects: Insecticides; Patents
Notes: Cover title.

At head of title: United States Department of Agriculture. Bureau of Chemistry and Soils. Insecticide Division.

Reproduced from typewritten copy; cover printed.