000 00410nam a22001337a 4500
008 230317b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _aD 651.5+651.8(023)
_bL1
245 _aFiling and indexing
_c/ Learning systems limited
260 _aLondon:
_bPitman Publishing,
_c1971
650 _aLibrary science
653 _aIndexing
942 _2udc
_cBK
999 _c10768
_d10768