Volume 18, Issue 1

J. -M. Gaillard, F. Krienen, W. Galbraith, A. Hussri, M. R. Jane, N. H. Lipman, G. Manning, T. Ratcliffe, P. Day, A. G. Parham, B. T. Payne, A. C. Sherwood, H. Faissner, and H. Reithler

Phys. Rev. Lett. 18, 20 (1967) - Published 2 January, 1967

Measurement of the Decay Rate of ${K_{2}}^{0} \to π^{0} + π^{0}$

James W. Cronin, Paul F. Kunz, Winthrop S. Risk, and Paul C. Wheeler

Phys. Rev. Lett. 18, 25 (1967) - Published 2 January, 1967

Sum Rules for Baryon Resonance Widths

Bunji Sakita and Kameshwar C. Wali

Phys. Rev. Lett. 18, 29 (1967) - Published 2 January, 1967

Current Algebra and Non-Regge Behavior of Weak Amplitudes

J. B. Bronzan, I. S. Gerstein, B. W. Lee, and F. E. Low

Phys. Rev. Lett. 18, 32 (1967) - Published 2 January, 1967

Fubini Sum Rule and Analyticity in Angular Momentum Plane

Virendra Singh

Phys. Rev. Lett. 18, 36 (1967) - Published 2 January, 1967

ERRATA

Simplified Theory of Symmetry Change in Second-Order Phase Transitions: Applications to $V_{3}$ Si.

Joseph L. Birman

Phys. Rev. Lett. 18, 39 (1967) - Published 2 January, 1967

Physical Review Letters

Volume 18, Issue 1

Editorial

Growth of Physical Review Letters

LETTERS

Effect of Magnetic field Orientation on Positron Annihilation in Potassium

Phase Transition of Hard-Square Lattice with Second-Neighbor Exclusion

Gadolinium Hyperfine Fields

Temperature Dependence of Elastic Constants and Thermal Expansion for U $O_{2}$

${\frac{3}{2}}^{-}$ Ground State of $V^{47}$

Evidence for the Slow-Neutron Gamma-Fission Reaction in ${Pu}^{238}$

Low-Energy Theorems and Internal Symmetry

Measurement of the Decay of the Long-Lived Neutral $K$ Meson into Two Neutral Pions