000 00326nam a2200121Ia 4500
008 211215s9999 xx 000 0 und d
040 _cJayakar Knowledge Resource Centre
100 _aMcelroy, William
245 0 _aLight and life
260 _bJOHNS HOPKINS UNI. PRESS
_abaltimore
_c1961
653 _aelectronics
942 _c1
999 _c66896
_d66896