@misc{indiciae5ba3bf909d6e, title = {Post-epizootic surveys of waterfowl for duck plague (duck virus enteritis)}, author = {C. J. Brand and D. E. Docherty}, year = {1988}, doi = {10.2307/1590991}, url = {https://pubs.usgs.gov/publication/1003767}, note = {Source identifier: 1003767} }