The Library holds, in each of our libraries, a collection of authoritative and scholarly reference material, in both print and electronic formats. The print material cannot be borrowed.
If you know the exact reference work that you are looking for, put the title in inverted commas, such as "Dictionary of Irish Biography".
In the left hand panel the Book/eBook and Full Text Online options will be helpful to narrow results down to book style items and, if you wish, works available online.