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Physical Review Letters – 16 December 1991
Volume 67, Issue 25

LETTERS

Gravitation and Astrophysics

Elementary Particles and Fields

Nuclear Physics

Atomic, Molecular, and Optical Physics

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, Etc.

Plasma and Beam Physics

Condensed Matter: Structure, Etc.

Condensed Matter: Electronic Properties, Etc.

Cross-Disciplinary Physics

COMMENTS