Customers provide the title, author, publication date, etc. of the document in their request. The method of delivery is usually determined by the customer. Electronic Document Delivery Services are usually large scale businesses. They must also obtain copyright to the materials they sell. There are many different types of Services.
Some companies provide access to thousands of journal articles in a broad range of subject areas.
Others specialize in certain documents such as dissertations, technical reports, and government research. Some companies only provide access to documents that reside in their own databases. Libraries use Electronic Document Delivery Services to supplement their collections. All rights reserved.