Exlibris by Jaroslaw Dolinski. Dimensions 3.9 x 4.8 cm.
Jaroslaw Doliński (1881 - 1971) - engineer, doctor of technical sciences. Long-time employee of the City Gasworks in Cracow (deputy director 1935-1939). Senior and honorary member of the Polish Association of Sanitary Engineers and Technicians. Publicist and editor of the magazines "Czasopismo Krakowskiego Towarzystwa Technicznego" and "Gaz, Woda i Technika Sanitarna". Head of the Central Laboratory of the gas industry. Lecturer at the Jagiellonian University (chemical technology) and AGH (coking issues).
