An essay on the nature, causes, and cure of the contagious distemper among the horned cattle in these kingdoms : By Daniel Peter Layard, ... The third edition. To which is added, A discourse on the usefulness of innoculation of the horned cattle. In a letter ... from Dr. Layard. - Layard, Daniel Peter (printed for J. and F. Rivington; Thomas Payne; James Robson; and John Walter, 1770)