00499nam a22001697a 4500003000800000005001700008008004100025040002100066082001500087100001900102245005300121250001200174260004300186300002600229504005300255650002100308BD-DhUL20230405110516.0161108s1951    uk  |||| |||| 000 0 eng d  aBD-DhULcBD-DhUL  a025.5bROI10aRoberts, A. D.10aIntroduction to reference books /cA. D. Roberts  a2nd ed.  aLondon :bLibrary Association, c1951.  aix, 212 p. ; c22 cm.  aIncludes bibliographical references and indexes.  aLibrary Science.