Cassirer, Ernst, 1874-1945.
Substance and function, and Einstein's theory of relativity, by Ernst Cassirer; authorized translation by William Curtis Swabey, PH.D., and Marie Collins Swabey, PH.D.
Relativity (Physics)
Substance (Philosophy)
Knowledge, Theory of.
1909.
Swabey, William Curtis, 1894-
Swabey, Marie Taylor (Collins) 1891-
Einstein's theory of relativity.