00383nam a2200145Ia 4500001000500000005001700005008004100022020001600063082001800079100003900097245004100136250000700177260002200184650003100206612420261006003922.0120911s9999    xx            000 0 und d  a0-534-98231  a650.02854 SIL  aSilver, Gerald A / Silver, Myrna L  aData communications for business -2e  a2E  aBoyd & Fraser Pub  aBusiness-computer programs