000 00469nam a22001697a 4500
008 230317b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _aD 651.54
_bJ5
100 1 _aKahn, Gilbert
_93695
245 _aProgressive filing
250 _a8th ed.
260 _aLondon:
_bMcGraw-Hill Book Company,
_c1969
300 _aix,118p.
650 _aLibrary science
653 _aProgressive
942 _2udc
_cBK
999 _c10890
_d10890