00578nus0 22002053i 450 UFI028756320251003044428.01615-208520160216a19..9999||||0itac50 bagbb|u||||||||Springer undergraduate mathematics seriesLondon [etc.]Springer.SUMSTSA0634636ITIT-00000020160216IT-BN0095 IT-NA0070 UFI0287563 01 BUSpringer undergraduate mathematics series1576055UNISANNIO