000 00258nam a2200121 4500
082 _a530.1
_bJOO
100 _aJoos, Georg
245 _aTheoretical Physics
250 _aed.2
260 _aLondon
_bBlackie & Son Limited
_c1951
300 _a853p.
942 _cBK
999 _c248566
_d248566