机读格式显示(MARC)

• 000 00883nam a2200301 a 4500

• 001 0000345185

• 003 CAL

• 005 20200829091000.0

• 008 760210s1957 enk b 001 0 eng d

• 010 __ |a ^^^58001294

• 040 __ |a DLC |c HDC |d DNU

• 050 00 |a QC544.V3 |b B4

• 090 __ |a TN1/B466

• 093 __ |a TN1 |2 5

• 094 __ |a 73.69 |2 3

• 099 __ |a CAL 0220110192611m

• 100 1_ |a Benham, Wilfrid Earnshaw.

• 245 14 |a The ultra high frequency performance of receiving valves / |c W.E. Benham & I.A. Harris ; foreword by Harold Everard M. Barlow.

• 260 __ |a London : |b Macdonald, |c 1957.

• 300 __ |a 173 p. : |b ill. ; |c 23 cm.

• 504 __ |a Includes bibliographical references and index.

• 650 _0 |a Vacuum-tubes.

• 650 _0 |a Vacuum-tube circuits.

• 650 _0 |a Shortwave radio.

• 700 1_ |a Harris, Ian Arthur.

• 920 __ |a 211260 |z 0

• 920 __ |a 242010 |z 2

• 998 __ |a WUL