00504cam a22001217a 4500008004000000082001300040245010400053260007900157300000900236440006100245650004000306700003600346180718b1982   xxu||||| |||| 00| 0 eng d  aO91 M664  aMinimal national standards caustic soda (mercury cell) industrycby Central Pollution Control Board  aDelhibCentral Board for the Prevention & Central of Water Pollutionc1982  a19p.  aComprehensive Industry Document Series: Coinds/6/1981-82  aCaustic soda industries - standards  aCentral Pollution Control Board