Could any one tell me how to keep old books safe from white fish etc.

Use naphthalene balls

If they are being often used each book can be kept wrapped in airtight polythene sheets

5 Ways To Keep Silverfish Away From Your Books Despite their aquatic-sounding name, silverfish are insects that are hard to eliminate with simple pest control techniques once they make your home their own. Pest prevention is the key to protecting your books and paper products from silverfish. Otherwise, you will need the assistance of a pest control professional to eliminate them. Read more: http://on.fb.me/1Ixl7CN

How to Protect Books & Papers From Silverfish By Deanne Lachner Read more : http://www.ehow.com/how_5597739_protect-books-papers-silverfish.html

Yes, naphthalene I am using

This is another fascinating download. Cannot thank you enough Rare Book Society of India!