Knowledge Management is emerging as a new concept in the management field. Though the concept is for business organisations but it is also attracting Library Professionals to participate and make use of it in managing library and information centres. This book on Knowledge Management is written to make aware the working librarians about knowledge management and its possible uses in the library and information centres. Knowledge Management, its various tasks and activities and implementation aspects have been discussed in details through various chapters in the book. A detailed and separate chapter on Knowledge Management in Libraries and Information Centres, is kept emphasising over the possible uses of Knowledge Management in academic and special libraries and the barriers for migrating librarians into knowledge managers along with state of art of Knowledge Management in the library and information centres. It is believed that this book will be useful for those who are interested to know the mystery of knowledge management in the field of library science. The students and the, teachers will also be benefited with this book to enhance their knowledge in the emerging field of Knowledge Management.".