trouble mounting DVD ROM

There HAS to be a way to do this!

Trying to mount a DVD-ROM. Can't find a suitable vfstype. e.g.

# mount -r -t iso9660 /dev/cdrom1 /mnt/cdrom1

It doesn't like this (duh!) but what would it like? Tried "# man mount".
Where else should I look?

Thanks, Ed.