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The scientific Theories of General and Special Relativity were first proposed by Albert Einstein.
Special Relativity in 1906 and General Relativity in 1916.
General Relativity - book - was created in 1984.
E=mc^2
Edit : That equation is part of "special relativity" not "general relativity".
General Relativity - book - has 491 pages.
The ISBN of General Relativity - book - is 0-226-87033-2.