000			003350000a22001330004500
080			_a535-3 _bC6
100			_aColwell, Hector A.
245			_aRadium x rays and the living cell with physical introduction
250			_a2nd rev. ed.
260			_aLondon _bG.Bell _c1924
300			_a365p., ill.
700			_aSidney, Ross
942			_cBK
999			_c51898 _d51898