From the Wikipedia page 
The National Library of Armenia (Armenian: Հայաստանի Ազգային գրադարան) is the legal deposit and copyright for Armenia. It is located in Yerevan. The building dates from 1939 and was designed to house seven million books. The oldest book is Urbatagirk (1512, Venice). It was founded in 1832 as part of the state gymnasium-school of Yerevan. It is the official cultural deposit for the entire republic.
The website, in Armenian, is