How many emergency/abnormal checklists are there for a typical airliner? (Related to, but hopefully not a dupe of, this question)

The latest NASA ASRS newsletter includes the case of an A320 crew that forgot to retract the gear and started detailed troubleshooting without noticing that the gear was still down. The captain said in his report that:


  I instructed the First Officer to coordinate landing at the divert
  airport while I briefed the Lead Flight Attendant and then performed
  the Airframe Vibration Checklist


The mention of an airframe vibration checklist caught my attention because it's such a specific scenario. So, excluding normal operations, how many checklists does a typical airliner (like the A320) have for unusual/abnormal/emergency scenarios?
How many checklists does a typical airliner have for
  unusual/abnormal/emergency scenarios?


Many. A book. The abnormal checklists usually compile to a book and it is located in the cockpit at all times.

As an example, there are 452 pages on the QRH of the Boeing 737. I counted 212 abnormal checklists using the index pages.