DP - MPI Library TY - JOUR T1 - In Science Fields UR - https://www.jstor.org/stable/3907264 UR - http://dx.doi.org/10.2307/3907264 T2 - Science newsletter : the weekly summary of current science SP - Vol. 19, No. 520 (1931), p. 200-201 CY - Washington PY - 1931 N1 - Copyright: Copyright 1931 Science Service, Inc. ER -