00424nam a2200145Ia 4500001000500000005001700005008004100022020001500063082001800078100002200096245008300118250000700201260004400208650002600252484420261006003820.0120911s9999    xx            000 0 und d  a053498231X  a650.02854 SIL  aSilver, Gerald A.  aData communications for business, 2nd ed. / Gerald A. Silver, Myrna L. Silver.  a2E  aBoston : Boyd & Fraser Pub. Co., C1991.  aElectronic commerce.