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This site clarifies US copyright law (if that is possible). Of particular interest is the 1923-1963 category where works would have passed into the public domain if the copyright was not renewed. The difficulty is in knowing if it was or not.

It talks about how English-language newspapers dominate South Africa's print media. This is very interesting to me because you would think that more people would want to read something in their native language, yet millions of Africans are preferring to read their newspaper in English. It also stated that "the English-language press is also read by the most important decision makers and policy advisers in the country on a regular basis and no doubt influences coverage in non-English newspapers as well as television and radio". What in the world is going on here? This is corrupting their culture!

Defence Law Enforcement Everay vehicle and vessel-mounted EO/IR systems consist of radars, long-range thermal cameras, thermal sights, and laser range finders， providing the tactical advantages of persistent surveillance.

Thermal imaging is a sixth sense to maritime patrols, unaffected by rain and fog, even the sunlight reflection on sea surface, or the interference of searchlight light. It can meet the needs of port, channel and coastal security, law enforcement, anti-piracy and threat detection, fishing fleet protection, ship tracking and observation, search and rescue operations, and environmental protection.