The Principle of Relativity - Einstein, Albert, 1879-1955; Minkowski, H. (Hermann), 1864-1909; Mahalanobis, P. C. (Prasanta Chandra), 1893-1972 [Author of introduction, etc.]; Bose, Satyendranath, 1894-1974 [Translator]; Saha, Meghnad, 1893-1956 [Translator]