NS-EN ISO 11734:1998 Water quality — Evaluation of the "ultimate" anaerobic biodegradability of organic compounds in digested sludge — Method by measurement of the biogas production (ISO 11734:1995)
1999NS-EN ISO 11734:1998 Water quality — Evaluation of the "ultimate" anaerobic biodegradability of organic compounds in digested sludge — Method by measurement of the biogas production (ISO 11734:1995)