000 00321nam a2200121Ia 4500
005 20251007104237.0
008 251006s9999 xx 000 0 und d
100 _asmith,j.r.
245 0 _aoptical distance measurament. optical distance measurment.
260 _a1st ed. | london lockwood
260 _c1970
942 _cBOK
999 _c3153
_d3153