IS:1885(Piii/sec 1)-1965 Electro technical vocabulary
Indian Standard Institution Manak Bhawan
IS:1885(Piii/sec 1)-1965 Electro technical vocabulary - ISI Manak bhawan 1966 - 28
IS:1885(Piii/sec 1)-1965 Electro technical vocabulary - ISI Manak bhawan 1966 - 28