[Koha] deleting biblio records

[lifewa at q-net.net.au]

Thanks Rob Weir for your help with Z39.50. It is working well now.

Next problem: There appear to be about 117 biblio and item records already
in KOHA for a "De Nobili College". How do I get rid of these?

More generally how do I delete a biblio record altogether?

Cheers

Richard Egan