Die Grundlagen der Einsteinschen Gravitationstheorie
Berlin: Verlag von Julius Springer, 1916.
First edition. 64 pp. Bound in publisher's wraps. Very Good+ with slightly toned wraps, tiny stain to back wrap, slightly bumped corners, bookplate on verso of front wrap. An early German language work on Einstein's theory of gravitation with a foreword by the man himself. Freundlich's first book.
Price: $250