Animal Parasitology Institute (U.S.), Beltsville Parasitological Laboratory., National Animal Parasite Laboratory (U.S.), United States. Animal Disease and Parasite Research Division., United States. Bureau of Animal Industry., & United States. Animal Disease and Parasite Research Branch. Index-catalogue of medical and veterinary zoology. Washington: For sale by the Supt. of Docs., U. S. Govt. Print. Off.

Animal Parasitology Institute (U.S.), Beltsville Parasitological Laboratory, National Animal Parasite Laboratory (U.S.), United States. Animal Disease and Parasite Research Division, United States. Bureau of Animal Industry, and United States. Animal Disease and Parasite Research Branch. Index-catalogue of Medical and Veterinary Zoology. Washington: For sale by the Supt. of Docs., U. S. Govt. Print. Off.

Animal Parasitology Institute (U.S.), et al. Index-catalogue of Medical and Veterinary Zoology. Washington: For sale by the Supt. of Docs., U. S. Govt. Print. Off.