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   62071
   We propose to observe three GeV error boxes of EGRET Galactic plane
   sources. ASCA observations are a particularly powerful means of
   identifying absorbed X-ray counterparts for the gamma-ray emitters. Our
   proposed 40ks observations will allow us to check that these sources
   are not EGRET blazars viewed through the plane and will provide
   localizations needed for low energy counterpart studies. In particular,
   we expect in several cases to detect extended power-law emission,
   consistent with a young pulsar-driven plerion. These data will provide
   important constraints on the nature of the galactic gamma-ray sources
   and will constitute a sensitive search for nebulae associated with
   young, spin-powered pulsars.
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