This book gives an overview of the subject covering different topics such as different types of libraries, public library movement in India, UK and USA; library legislation; library cooperation; library associations and other organizations, librarianship as a profession; censorship and copyright and laws of library science. The book has been written primarily to meet the requirements of students preparing for Library Science/ Library and Information Science/Documentation diplomas and Degrees (Bachelor of Library Science/and Diploma in Library Science. It will also be found useful by practising librarians.