00430nam a22001217a 4500008004100000040005500041080002600096245008900122260005400211300001300265650001200278653001800290230609b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a628.19.001.5(05)(410)  aWater pollution research 1971c/  Report of the Director of Water Pollution Research  aLondon: bHer Majesty's Stationary Office, c1972  av, 129p.  aScience  aGreat Britain