000 00485nam a2200193Ia 4500
008 131223s9999 xx 000 0 und d
040 _aISI KOLKATA
041 _aEnglish
082 _a681.42
_bT975
100 _aTwyman F
245 _aPrism and lens making
_ba textbook for optical glassworkers
260 _aLondon
_bHilger & Watts
_c1957
300 _a629p.
650 _aLens making
650 _aLenses
650 _aOptical glassworkers
650 _aPrism
942 _cBK
999 _c49876
_d49876