"Library materials on loan can be returned or dropped off at your library between 10am and 3pm daily."
Plato said library users could search for material available using the online public access catalogue.
The return date for anything borrowed since March 1 will be extended to April 30. Up to 20 items can be borrowed for 30 days, then renewed either online or by telephone for another 30 days.
"Regrettably, no reservations or interlibrary loan requests can be accommodated during this period," said Plato.
The mayor added that the number of people allowed in housing offices was being reduced. "At this stage, offices remain open. However, strong precautions are being taken to ensure a heightened level of hygiene and social distancing."