D, a cross-section scan data sample, distributed among 41 center-of-mass energy points from 3.73 to 3.89 GeV, was taken with the BESⅢ detector operated at the BEPCⅡ collider in the year 2010. By analyzing the large angle Bhabha scattering events, we measure the integrated luminosity of the data sample at each center-of-mass energy point. The total integrated luminosity of the data sample is 76.16±0.04±0.61 pb-1, where the flrst uncertainty is statistical and the second systematic."> Measurement of the integrated Luminosities of cross-section scan data samples around the ψ(3770) mass region -
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