00399nam a22001217a 4500008004100000020001500041040005500056080003100111245006300142260004300205300000900248650002000257230315b        |||||||| |||| 00| 0 eng d  a0712303189  aNational Science LibrarycNational Science Library  aD 027.54:001.814(410) bN3  aLondon services research register c/ The British Library   aLondon: bThe British Library,  c1993  a54p.  aLibrary science