You can download A Textbook of Veterinary Special Pathology Infectious Diseases of Livestock and Poultry by J L Vegad, A K Katiyar free in pdf format.
This is the first edition of a classic textbook on infectious diseases of livestock and poultry. Infections caused by all classes of pathogen are covered, including those of prion. In view of the great strides made recently in our understanding of the pathogenesis of infectious diseases, an emphasis has been given on the molecular mechanisms involved. This book is intended for both undergraduate and postgraduate . . .