Microbiology is a part of biology that studies the structure, functions and development of microscopic organisms such as acellular, multicellular and unicellular organisms. The field is further divided into two groups, pure and applied microbiology. This book contains chapters on both of these parts and their sub-divisions as well as their applications and essential theories. This book outlines the processes and applications of the subject in detail. It is a compilation of chapters that discuss the most vital concepts of this field. This book, with its detailed analyses and data, will prove immensely beneficial to students involved in this area at various levels. For all those who are interested in microbiology, this textbook can prove to be an essential guide.