00996nam2-2200337---450-99000328804020331620090703092019.0000328804USA01000328804(ALEPH)000328804USA0100032880420090703d1972----km-y0itay50------baengNL||||||||001yy<<Vol. 4:>> <<The>> periodic system (1920-1923)Niels Bohredited by J. Rud NielsenAmsterdamNorth Holland publ.copyr. 1972IX, 765 p.ill. ritr.27 cm0010003288012001Collected worksFisicaStoria530.09BOHR,Niels256NIELSEN,J. RudITsalbcISBD990003288040203316530.09 BOH/47762/CBS530.0900222644BKSCIRSIAV79020090703USA010920Periodic System (1920-1923375518UNISA