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Pannon Telecom is a Agoura Hills, CA-based company in the Telecommunications sector.
PSR-LA is a physician and health advocate membership organization working to protect public health from nuclear threats and environmental toxins. Representing over 5,000 physicians, health professionals, and concerned residents in Southern California, we inform the medical community and policymakers about toxic threats, promote safer practices, and strengthen local community organizations to engage in meaningful public health and environmental advocacy. We share a responsibility with other physicians, health advocates and policymakers to create solutions that improve the health and environment for all Californians. We combine our commitment to science, public health, advocacy and social justice to accomplish this. Physicians for Social Responsibility-Los Angeles works to protect public health from nuclear threats and environmental toxins.
Total Call Mobile is a Los Angeles, CA-based company in the Telecommunications sector.
Heritage Central Florida is a Casselberry, FL-based company in the Telecommunications sector.
AT&T Inc. is an American multinational telecommunications corporation headquartered in Whitacre Tower, downtown Dallas, Texas AT&T is the largest provider both of mobile telephony and of fixed telephony in the United States, and also provides broadband subscription television services. AT&T is the third-largest company in Texas (the largest non-oil company, behind only ExxonMobil and ConocoPhillips, and also the largest Dallas company). As of May 2013, AT&T is the 21st largest company in the world by market value, and the 13th largest non-oil company. As of 2013, it is also the 21st largest mobile telecom operator in the world, with over 107.9 million mobile customers.