Its a IGNOU BLIE-221 solved assignment for you in a descriptive way. You can get each and every detail in this. All questions are covered and well explained, language is easy for better understanding. Buy this from us and get best help for your coming examination/assignment. Information plays a significant role in the development of mankind. It is needed for different purposes, viz. education, entertainment, decision making, etc. Library is one of the agencies that exists to serve the information needs of the society. Data centres, information analysis centres and referral centres and clearing houses are other agencies involved in providing information. This Block is devoted to a discussion of social perspectives of library and information.