机读格式显示(MARC)

• 000 00508nam2 2200181 4500

• 001 0000237717

• 020 __ |a |c ￥64.00

• 041 0_ |a eng

• 093 __ |a TN91 |v 4

• 245 1_ |a Telegraph and data transmission ove shortwave radio links;fundamental principles and networks |c Wiesner,Lothar. |g |A TELEGRAP,FUNDAMEN |F WIESNER,LOTHAR

• 250 __ |a

• 260 __ |a London |b Heyden&Son Ltd |c 1981

• 300 __ |a 199c

• 440 0_ |a

• 700 _0 |a Wiesner,Lothar. |A WIESNER,LOTHAR |4 著

• 851 _0 |a CN |b HIEL

• 905 __ |a HIEL |d TN91/W1

• 999 __ |b 1