Results from X-ray Surveys with ASCA

We present main results from X-ray surveys performed with ASCA, focusing on the ASCA Large Sky Survey (LSS), the Lockman Hole deep survey, and the ASCA Medium Sensitivity Survey (AMSS or the GIS catalog project). The log N-log S relations, spectral properties of sources, and results of optical identification are summarized. We discuss implications of these results for the origin of the CXB.