The author proposes a system using the HUC to identify all information and knowledge which can be reduced to a written, pictorial, oral, or machine readable record. The code designations, which may consist of letters, numerals, and other symbols and which average 12 to 18 characters in length, provide information in 12 fields: type of material,…

Of the problems discussed, those posing the greatest obstacle for the full utilization of microform systems are: (1) the problem of identifying the material on microforms when it is associated with key words in computerized digitalized systems; (2) the problem of copyright in converting collections of material into microform stores; and (3) the…