Whodunit math puzzles

Holdings

hidmidmiidnidwidlocation_codelocationbarcodecallnumdeweycreatedupdated
185504854520122441169830256043GCBS212GCBS010197793.7 WIS793.715825759371742569409
225734758067871276169830256043LIS287T0025220793.7 WIS793.716159188961615918896
252226260370162424169830256043SOS418SOS0100842793.7 WIS793.716377825731736800991
33380766730327158316983025604350251T 5010472793.7 WIS793.716407292551640729255