机读格式显示(MARC)

• 000 00442cam a2200145 a 4500

• 001 0000358323

• 005 20201017151000.0

• 008 201017s1987 ctuaf b 00110 engsu

• 040 __ |c CALIS

• 090 __ |a TM58-53/N277-2

• 093 __ |a TM58-53

• 110 1_ |a Nationl association of relay manufactures.

• 245 10 |a Relay conference, |b 3rd international and 22nd national relay conference 1974.

• 260 __ |a N.Y. |b N.Y. |c 1974.

• 300 __ |a various pagings |b ill. ; |c 29cm.