00386nam a22000977a 4500008004100000040005500041080002000096100001900116245010200135260005100237230323b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aD 681.3.002bL8  aVickery, Alina  aOn-Line searches of computerised data basesc/ Central Information Services, University of London  aLondon: bCentral Information Services, c1978