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Synopsis The LIS scene is changing fast in the face of new challenges and in response to new demands. The advent of new technologies and their application to LIS work and services is further accelerating the pace of this change. Total knowledge and information, which is presently available in the libraries in the form of books and other documents, can now be put on the World Wide Web (WWW), making the libraries totally web-based. Knowledge and information of all types can then be accessed over the world telephone network from communication terminals. Through personal computers the web can be accessed, desired information can be seen and read, and printed, if so required. Through telecommunication, information is transmitted from one point to another by electronic media. Telecommunication networks are there to handle digital machine readable data and to use telephone lines, micro waves and communication satellite to transmit such data. Professionals today are thus experiencing a transition from stand alone libraries to library and information networks; from printed publications to digital documents; from ownership of graphic records to access to information. They are required to take cognisance of this transition and redefine their roles. They must learn to adapt to change. In the context of above, this book shall serve well in managing information efficiently and in giving information service effectively.