  The Pioneer Venus Orbiter (PVO) Gamma-ray burst experiment detected 318
gamma-ray bursts over about 14 years between 1978 and 1992 with near $4\pi$
coverage. This data set complements BATSE by determining the properties of the
brightest gamma-ray bursts. PVO places a constrains on the slope of the bright
end of the Log N-Log P distribution. The slope is -1.52$\pm 0.15$.
