Until recently, information consolidation products (ICP) were prepared by subject specialists themselves on the basis of the documents furnished by libraries and information centers. But with advances made in the held of library and information science, especially in the techniques of organising and displaying information, the library and information science (LIS) personnel have started playing a dominant role in the preparation of ICPs. But, for them to play an useful role, the following prerequisites become necessary:

• familiarity with the different aspects of the subject;
• familiarity with reader's requirements on the subject of his pursuit; and  
• knowledge of the helpful methods of presentation of ideas in an ICP.