00456nam a22001217a 4500008004100000040005500041080002700096245012900123260004000252300001000292650001200302653002000314230221b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a628.19(082.2)(4)bK1.2  aConference on water pollution problems in Europe, held in Geneva 22 February to 03 March 1961c/ United Nations, Geneva 1961  aGeneva:   bUnited Nations,  c1961  a468p.  aScience  aWater pollution