000 00264nam a2200109 4500
020 _a0837189365
082 _a021. ORR/LIB
100 _aOrr, J M
245 _aLibraries as communication systems
_cOrr, J M
260 _aLondon
_bGreenwood Press
_c1977
942 _cBK
999 _c379313
_d379313