During Ranganathan's days there were a number of Indian Standards issued (by the then ISI now BIS) relating to various aspects of Library services and library materials. I am not aware of any standardization activity nowadays for the past few decades in this area. Is anyone aware of what is happening? Dr P Vyasamoorthy, 30 Gruhalakshmi Colony Secunderabad 500015 Ph 040-27846631 / 9490804278.My blog: http://vyasa-kaaranam-ketkadey.blogspot.com/ -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.