دانلود کتاب Protozoology

Preface

THE fourth edition of Protozoology maintains its original aim in setting forth "introductory information on the common and representative genera of all groups of both free-living and parasitic Protozoa" for seniors and graduates in zoology in colleges and universities. It has been noted in recent years that students frequently wished to obtain a fuller knowledge on certain topics, organisms, processes, etc., than that which was found in the former edition. In order to meet this need without too great an expansion, references have been given to various items in the text and a list of a much larger number of literature has been appended to each chapter. Furthermore, this enlargement of references increases the usefulness of this work to advanced students, teachers of biology, field workers in various areas of biological science, veterinarians, physicians, public health workers, laboratory diagnosticians and technicians, etc.

While the chapter arrangement remains the same as before, a thorough revision has been carried on throughout the text in the light of many recently published contributions to protozoology. Good illustrations are indispensable in this kind of work, since they are far more easily comprehended than lengthy statements. Therefore, old illustrations were replaced by more suitable ones and many new illustrations have been added, bringing up the total number of the text figures now to 376. Except diagrams, all figures are accompanied by the scales of magnification. For illustrations that have been adopted from published papers, the indebtedness of the author is expressed by mentioning the authors' names.