IS:2597(Pi)-1964 Code of practice for the use of electronic values
Indian Standard Institution Manak Bhawan
IS:2597(Pi)-1964 Code of practice for the use of electronic values - ISI Manak bhawan 1964 - 23
IS:2597(Pi)-1964 Code of practice for the use of electronic values - ISI Manak bhawan 1964 - 23