U.S.A. Physical Review, 1947. Royal8vo. Without wrappers (as issued). Offprint from "The Physical Review", Vol. 73, No. 9, May 1, 1948. Fine and clean. Pp. 1109-1111 + 1 blank.
Offprint of Bohr's paper in which he suggested that internal structure of the deuteron might explain the theoretical discrepancy shown in the hyperfine structure of H2.
Order-nr.: 51303