00420nam a2200133 a 450000500170000000800410001704000240005810000170008224500290009926000470012830000190017550000370019465000550023120231107123824.0090331s19uu    xx            00    eng d  6HSLRCaHSLRCcHSLRC  aJacob Slonim10aBuilding an open system 0 aNew York :bVan Nostrand Reinhold,cc1987.  axii, 299 pages  aIncludes bibliography and index.  aElectronic data processingxDistributed processing