[Koha] Problem in Koha item types

Dear Sir, Sorry to bring a question to the list, but we're facing a problem in KOHA under item type location and I need some advice and help. My Koha problem is, it's show *[Type: Book] *every items like i.e. Journals, CD (Audio/Visual), proceeding etc. In this connection, herewith attached screen shot for your information. In this regards,we are request to you, please kindly provide help to me, how can edit, remove item types accordingly book, journal, etc. Please do the needful. *With Regards,* *Ashish Kumar * *9717864664*