GENERAL THEORY OF RELATIVITY 19 7 Alexandrov A D, "Space and Time in Modern Physics" in Lenin and Modern Natural Science (ed. Omelyanovsky), Progress Publishers, p 225 8 Bogomolov A S, "Dialectical Contradiction and its Solution", Philosophy in the USSR, Progress Publishers, 1977, p 141. 9 Eddington A S, Nature of the Physical World, Collins. 10 Lenin V I, Collected Works, Vol 38, p 363. • 11 Lenin V I, Materialism and Empirio-criticism, op cit. 12 Reichenbach H, "Philosophical Significance of Relativity", in Albert Einsten, Philosopher Scientist, (Ed. Paul Arthur Schilpp). 13 Alexandrov A S, op cit, p 233. 14 Lenin V I, op cit. 15 Fock V A, The Theory of Space Time and Gravitation, Pergamon Press, 1964. 16 Ibid. 17 Ibid. 18 Narlikar J V, The Structure of the Universe. Oxford University Press, 1977. 19 Lenin V I, Collected Works, Vol 38, p 363.