000			00306nas a2200133Ia 4500
001			S721
008			170811c99999999xx |||||||||||| ||und||
245			_aOptik
260			_aGermany : _c1950 -
300			_b ill. _c cm.
362			_aBegan from year / volume 1950
650			_vPeriodicals.
942			_cBV
999			_c184130 _d184130