Typed Cyclostyled Form 

Revised version of bound register form came into existence due to the typewriter and cyclostyling machine. The entries are typed. Multiple copies (up to four) can be had from the typewriter. By using a cyclostyling machine, one may get multiple copies of the catalogue. This facilitated movement of catalogue from one room to another room. All the advantages of bound register form are applicable to this form. Pages of the register are now kept in plastic jackets to increase the life of the pages. These pages are filed in separate files. 

It is also difficult to provide additional entries to a document, in addition to the main entry. Hence, flexibility of different approaches to the catalogue may not be possible. Provision of cross-reference is even more difficult. All these naturally restrict the use of the catalogue. Most modern libraries have discarded this form of library catalogue.