00402nam a2200145Ia 4500020001800000082001400018100001500032245003800047260003800085300001400123504001900137650002100156650004900177650003000226  a0 273 25203 8  a004 NEG-;  aNegus, Ron 0aGuide to computer bureau services  aLondonbPitman Publicationsc1972  axi, 158p.  aIncludes index  aComputer science  aData processing service centers - Guidebooks  aComputer service industry