In Russian. Kozik, Inna Vasilyevna. Determination of the coefficient of pulsation of light in installations of internal lighting with gas discharge lamps. Moscow: COLIUV, 1978 Opredelenie koeffitsienta pulsatsii osveshchennosti v ustanovkakh vnutrennego osveshcheniya s gazorazryadnymi lampami/Determination of the luminance pulsation coefficient in internal lighting installations with gas-discharge lamps In Russian. All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7644740