000 00487nam a2200157Ia 4500
999 _c22265
_d22265
082 _a025.432 PER-;
100 _aPerreault, J.M.
245 0 _aTowards a theory for UDC: essays aimed at structural understanding and operation development
260 _aLondon
_bClive bingley
_c1969
300 _a241p.
650 _aClassification, Universal decimal - Study and teaching
650 _aClassification - Books
650 _aLibrary education
650 _aLibrary science
942 _cBK