Hi, thanks for your question.
It is a tradition to have books on the table in the House of Representatives. They are there for members to use while working in the chamber.
The books in front of the Clerk and Deputy Clerk are reference books which help the Clerks in their work. These include the standing orders—the rules for the House of Representatives—, House of Representatives Practice, as well as dictionaries, copies of the Australian Constitution and copies of Hansard.
Members of parliament may consult these books at any time. The information in these books is also available online, so members may choose to access this information through laptops or other devices.