Relativity
EINSTEIN, Albert / (tr.) LAWSON, Robert W.
Relativity
The Special and the General TheoryA Popular Exposition
1920. first edition. London: Methuen & Co. 1 volume. xiv, (2), 138 pages, (2), 8. portrayal frontispice and 5 diagrams. small 8vo (130x195). publisher's original cloth boards.