METU Library staff Furuzan Olşen, Gülsevin Arün, UNESCO expert and Library Director Natelle Isley, Solmaz İzdemir (from left to right) in the first section of the library at Milli Müdafaa Caddesi No.18

On 4 January 1958, Natelle Isley, who is an UNESCO expert, was appointed as the director of the Library to ensure that the Library is organized in a contemporary sense. The main principles related to the organization of the Library have been determined and transferred into practice. In March 1958, the Library of Congress Classification System was decided to be implemented. With this application, ODTÜ Library has become the first library to use the system which is utilised by many universities and research libraries in our country today.
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