Social scientists have used the concept of " social networks " since early in the 20th century to connote complex sets of relationships between members of social systems at all scales, from interpersonal to international.In the s Jacob Moreno and Helen Jennings introduced basic analytical methods.This page will be continually updated to add new resources Last Updated: January,so please use our contact form if you know of a site that should be included. Genuine Christian singles only - no fake mail from us, spam, pop-ups or viruses.
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