Document Delivery Services:
Information searches conducted by library or information specialists from databases usually are from bibliographic much less on full-text databases. Since the biblio-graphic databases provide only bibliographic references and abstracts, the users often request for copies of full-texts of certain references that are of interest to them. Supplying the full texts against such requests is called document delivery service. The full texts can be sent to the users as photocopies, microforms or through electronic transfer through online networks. While the photocopies and microforms are sent by post, electronic transfer can be made by fax, electronic mail, or Internet or any other available network. Normally, the copies are not supplied by fax or electronic mail, etc., due to various reasons. Document delivery service is a restrictive service and is usually constrained by the provisions of copyright and intellectual property rights.