000 002550000a22001210004500
245 _aThe Noble gases
100 _aClaassen, H.H.
260 _aBoston
_bD.C. Heath
_c1966
300 _a117 p.
080 _a543.27
_bC6
041 _aEN
942 _cBK
999 _c52189
_d52189