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The pion-proton differential scattering cross sections have been measured at 150 and 170 Mev. Measurements were made at eight angles using scintillation counters and a liquid hydrogen target. Statistical errors are of the order 5 percent or less. Phase shift analyses of the data have been made on the assumption that the total isotopic spin is conserved and that only .? and p waves are appreciably scattered. The angular distributions give no positive indication of any d-wave scattering.

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