00346nam a2200121Ia 4500008004100000020001500041041001200056100001100068245008200079260004800161300000800209650000700217221030s9999    xx            000 0 und d  a9380386553  aEnglish  aK. Roy 2aA Handbook on Theory & Practice of Illuminating Engineering Vol. Icby K. Roy  bUniversities Science PressaNew Delhic2014  a158  aEE