This book provides an introduction to the multilingual aspects of Information Technology (IT) - the use of computers to process, store and disseminate information. It offers a unified view of resarch and applications in the field of multilingual information processing. It presents a selective survey of existing tools for interlingual communications, such as automated dictionaries, terminological data banks, machine aids for translators, machine translation, multilingual thesauri and information systems. It evaluates the merits of existing techniques from the point of view of their pracitical applications and examines research trends.