Badan Barman posted “Classify Your Document with DDC by Using the Web” [http://lislatest.blogspot.com/2008/09/classifying-your-document-according-to.html] describing one fast method of finding DDC classification numbers which is quoted below. There are other quick methods as well some of which I describe in detail in our departmental documentation for library resources management. Anyway, here is the post:
“Yes, forget about Web Dewey, now you can find the DDC numbers over the web by other means also. I don’t think any of our LIS professional is following this procedure. It’s really interesting… Here is a simple way
1. Go to: http://isbndb.com/
2. Enter the title that is in your library and search.
3. Click on the most relevant title under the heading of “Books Matching (‘your enter title’)”.
4. Consult the ‘Dewey Class:’ or ‘LCC Number:’ under ‘Classification:’ Heading. This is your classification number you are looking for.
If you don’t find the Heading ‘Classification:’ or You find the Heading
‘Classification:’ but don’t find the ‘Dewey Class:’ or ‘LCC Number:’ then again
5. Click on any appropriate title under ‘Libraries this book has an entry in:’.
5. Now under the ‘MARC Record’ see against: 092: $a: or 082. This is your classification number you are looking for.”