The Open Archive Initiative Protocol for Metadata Harvesting (OAI-PMH) is an interoperability framework that facilitates discovery of resources from multiple digital repositories from a single search service, known as OAI Service Provider. Even though OAI-PMH has become very popular among scholarly repositories, majority of scholarly literature still do not support it. Although this situation will keep improving, we cannot expect all the scholarly resources to be OAI-compliant at the article-level any time soon. This is especially true in case of primary resources, keeping in view that there...