Tertiary Sources Tertiary sources are publications that summarize and digest the information in primary and secondary sources to provide background on a topic, idea, or event. Encyclopedias and biographical dictionaries are prime examples of tertiary sources.
From Wikipedia, the free encyclopedia. A value-added service (VAS) is a popular telecommunications industry term for non-core services, or in short, all services beyond standard voice calls and fax transmissions. However, it can be used in any service industry, for services available at little or no cost, to promote their primary business.
Create an Account in Vendor Self Service. The Vendor Self-Service Portal (VSS) allows vendors to conduct business with the State of West Virginia. Many state procurement functions such as the West Virginia Purchasing Bulletin and vendor registration are administered in wvOASIS through the VSS portal.