Pamphlet. "Presented at the Northeastern Conference of Laboratory Workers on Pullorum Disease Control, Twenty-eighth Annual Meeting, University of Delaware, Newark, Delaware, June 19-20, 1956." "Published with the approval of the Direction of the West Virginia Agricultural Experiment Station as Scientific paper No. 534 from the Departments of Animal Husbandry and Agricultural Biochemistry, West Virginia University, Morgantown, W. Va. Supported in part by funds from Regional Project NE-5. (9b3), and a grant from American Cyanamid Company."