ISBN 9780691057187 books & textbook
The Collected Papers of Albert Einstein: Volume 7: The Berlin Years: Writings, 1918-1921. (English translation of selected texts). (Collected Papers of Albert Einstein, 7)
Einstein, Albert Engel, Alfred
Princeton University Press /2002-04T Paperback / 432 Pages
isbn-10: 0691057184 / isbn-13: 9780691057187
