00525nam a22001217a 4500008004100000040005500041080002400096245017900120260006200299300001000361650001600371700001600387230607b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a62-784.2(082.2)bN2  aFuture practice of contamination controlc/ Proceedings of the 11th international symposium on contamination.........................................21 and 25 September, 1992  aLondon: bMechanical Engineering Publications Ltd, c1992  a656p.  aProceedings  aProceedings