Content development is the most important aspect for information retrieval, whether it is in traditional environment or in web-information retrieval context. The content development encompasses varieties of activities from recording, managing, processing, and organizing to offering different services and ultimately the retrieving information. The organization and retrieving the information in open access environment is no exception to it. The philosophy and fundamentals remain the same. Only the techniques vary depending upon the development and availability of technology. In the previous two unites of this module we have discussed the resource description and interoperability issues. This unit provides you an insight to the intricacies of information retrieval for open access literature.