Several books on different topics like food microbiology, industrial microbiology, soil microbiology, biological nitrogen fixation and molecular Biotech Books - BIOTECH - BIOTECHnology are available in universities/ research institutes which deals with specified topic. But a textbook on general microbiology written by an Indian author covering all the topics at one spot is scarcely available in the market. The undergraduate students and students preparing for competitive examinations have to consult books of foreign authors. These books are quite bulky and difficult to understand. There is a dire need of a textbook that can cover all the topics to avoid unnecessary exercise and utilize energy in a fruitful manner. The present book extensively embodies different topics like history, cell structure, microbial growth, bacterial classification, soil microbiology, food microbiology, fermentation, waste recycling and Biotech Books - BIOTECH - BIOTECHnology. It is hoped that this compilation should serve as a torch bearer for undergraduate students who have meek knowledge of microbes.