00301nam a2200121Ia 4500082001900000100002200019245004100041260003400082300001400116490003900130500000500169700000500174  a515.1bG993.DI  aGuzman, Miguel de  aDifferentiation of integrals in Rnb  aBerlinbSpringer-Verlagc1975  axi, 226p.  aLecture notes in Mathematicsv 481  a  a