  Differential cross-sections are presented for the inclusive production of
charged pions in the momentum range 0.1 to 1.2 GeV/c in interactions of 12.3
and 17.5 GeV/c protons with Be, Cu, and Au targets. The measurements were made
by Experiment 910 at the Alternating Gradient Synchrotron in Brookhaven
National Laboratory. The cross-sections are presented as a function of pion
total momentum and production polar angle $\theta$ with respect to the beam.
