00510nam a2200193Ia 4500008004100000020001500041082001400056100002000070245006100090250000600151260004800157300000800205650001800213650002400231653001000255653001800265653001200283700002100295170901s1979    xx            000 0 und d  a0521227712  a599bL43L  aLefkovits, Ivan 0aLimiting Dilution Analysis of Cells in the Immune System  a1  aCambridgebCambridge University Pressc1979  a262  aPure Sciences  aZoological sciences  aCells  aImmune system  aMammals  aWaldmann, Herman