000 00199nam a2200085Ia 4500
008 221021s9999 xx 000 0 und d
100 _aVAN ZYL, E J
_9129363
245 0 _aPHYSICAL SCIENCE
942 _cBK
_w561
_xJohn Tresidder
_y561
_zJohn Tresidder
999 _c734041
_d734040