NS-EN 1014-3:1997 Wood preservatives — Creosote and creosoted timber — Methods of sampling and analysis — Part 3: Determination of the benzo[a]pyrene content of creosote
2010NS-EN 1014-3:2010 Wood preservatives — Creosote and creosoted timber — Methods of sampling and analysis — Part 3: Determination of the benzo(a)pyrene content of creosote
1998NS-EN 1014-3:1997 Wood preservatives — Creosote and creosoted timber — Methods of sampling and analysis — Part 3: Determination of the benzo[a]pyrene content of creosote