1. Validation of the Minnesota food animal disease reporting system;Diesch,1979
2. The Minnesota animal disease reporting system for food producing animals;Diesch,1974
3. A Nationwide System for Animal Health Surveillance;Hutton,1974
4. Unique characteristics of the National Animal Disease Surveillance System;King;J. Am. Vet. Med. Assoc.,1985
5. The National Animal Health Monitoring System: an early assessment;King,1986