Abstract--This thesis describes the inclusive multiplicity measurements of K^o, L^o, X^-, S*^±, and W^- (including antiparticles) as functions of the scaled variables X_P, X_E, and ln(1/X_P) using data acquired at 27.4GeV E_cm with the upgraded TPC/Two-Gamma detector at PEP in 1989-1990. The measured inclusive rates are, respectively: 1.37±.03 (stat.)±.07 (syst.), 0.183±.010±.012, 0.018±.006±.006, 0.018±.009±.006, and 0.0001±.0005±.0002 (with 95% upper limits of 0.070 and 0.013 for S*^± and W^-). This S*^± rate supports the implication from the OPAL Collaboration's measurement that the S*^± is over-predicted by string models (e.g.: Lund, UCLA). This W^- rate is compatible with string model predictions, is lower than the previous TPC/Two-Gamma results, and is much lower than the rate reported by the Mark II Collaboration at 29GeV. The L^o and S*^± X_P spectra support the previous experimental indication that baryon spectra are softer than string model predictions. Mean, median and mode are estimated for the K^o and L^o ln(1/X_P) spectra for future comparisons at 10, 58 and 91GeV. To facilitate model builders, world averages for various hadrons are formed from a compilation of similar results at sqrt(s) = 10, 29, and 91GeV. Comparisons with averages at different center-of-mass energies suggest that the actual rates at 29GeV for S*^± and W^- are slightly higher than those reported here.

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