Some snails and slugs of quarantine significance to the United States - Burch, J. B. (John Bayard),; United States. Agricultural Research Service. (Washington, D.C, U.S. Dept. of Agriculture, Agricultural Research Service, 1960, 1960)
https://www.biodiversitylibrary.org/bibliography/67238
Keywords: Slugs (Mollusks)|Snails|Snails as carriers of disease