Einstein, A.
The collected papers of Albert Einstein-V-8: The Berlin years: Correspondence, 1914-1918 - Princeton; New Jersey Princeton University Press 1998 - xxv, 714p.
0-691-04841-X
The collected papers of Albert Einstein-V-8: The Berlin years: Correspondence, 1914-1918 - Princeton; New Jersey Princeton University Press 1998 - xxv, 714p.
0-691-04841-X