机读格式显示(MARC)

• 000 00769nam a22002297a 4500

• 001 0000334054

• 003 CAL

• 005 20200831135100.0

• 008 950710s1982 enka b 001 0 eng

• 040 __ |a ECN |c ECN

• 090 __ |a T713.063/V215/2:1

• 090 __ |a T713.063/V215/2:2

• 090 __ |a TN13/V215/2:3

• 093 __ |a TN13

• 099 __ |a CALB022011175131

• 245 00 |a Valves and tubes.

• 260 __ |a London : |b Mullard House, |c 19--

• 300 __ |a v. |c 23

• 440 _0 |a Mullard Technical Handbook ; |v Bk.2

• 505 1_ |a V.2/1. |t Receiving valves television picture tubes-- |g V.2/3. |t Gasfilled tubes-- |g V.2/5. |t Microwave tubes and components-- |g v.2/2. |t Electron-optical devices radiation detectors-- |g v.2/4. |t Transmitting and industrial heating valves.

• 920 __ |a 231220 |z 2

• 998 __ |a ECN