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.
exists and is an alternate of . I'm assume by VA you mean Volt-Amperes. VA is a measurement for Reactive Power. In simplest of ways you can think of 10 VA as 10 watts. Usually VA is used for transformers to denote how much electrical energy is being transformed.