00570nam a22001937a 4500003000400000005001700004008004100021020001800062028000800080082001800088100002100106245007300127260003500200300003700235655001100272655002200283655005100305655002000356SNU20140820184703.0140820b        xxu||||| |||| 00| 0 eng d  a9780072125702  aHCL  a621.38275 GOR  aGoralski, Walter  aSONETb: a guide to Synchronous Optical Network  c/ Walter Goralski  aNew York b: McGraw-Hillc1997  axxii, 475 p. b: ill. c; 24 cm.  aSONET   aData transmission  aSONET : a guide to Synchronous Optical Network  aWalter Goralski