机读格式显示(MARC)

• 000 01047cam 2200313 a 4500

• 000 1000102155

• 001 0000325232

• 005 20080318110059.0

• 008 981216s1983 nyua b 001 0 eng

• 020 __ |a 0076000036 : |c CNY5.90

• 040 __ |c SJT

• 050 0_ |a TK5105 |b .H425 1983

• 082 0_ |a 384 |2 19

• 090 __ |a TN919/HG

• 093 __ |a TN919 |2 4

• 099 __ |a CAL 022000310550

• 100 1_ |a Held, Gilbert, |d 1943-

• 245 10 |a Data communications : |b a comprehensive approach / |c Gilbert Held, Ray Sarch.

• 260 __ |a New York, N.Y. : |b Data Communications, |c c1983.

• 300 __ |a xviii, 441 p. : |b ill. ; |c 24 cm.

• 490 1_ |a Data communications book series

• 504 __ |a Includes bibliographical references (p. xviii) and index.

• 650 _0 |a Data transmission systems.

• 700 1_ |a Sarch, Ray.

• 830 _0 |a McGraw-Hill data communications book series.

• 901 __022008000816

• 905 __ |a CAU |f TN919/HG |b E0274198

• 907 __ |a CAU |f TN919/HG |b E0274198

• 999 __ |t C |A gypx |a 20080318 10:58:51 |I gypx |i 20080318 11:00:59 |G wzhlc |g 20091229 09:09:0