This book is being equipped for the students of zoology, agriculture, and veterinary science to give an explanation of parasites and parasitic diseases of man and his domestic animals existing in tropical and temperate areas. The essential biology and life cycles of parasites of medical and economic significance to man, and in particular those parasites which are characteristically found in India. The chapters themselves are complete yet free of needless details. Arrangement of chapters and topics as such that it is effortlessly followed not only by students but even by a general readers. The book matter is clear and simple.