000
003260000a22001330004500
008
140223b1950 xxu||||| |||| 00| 0 eng d
041
_a
ENG
080
_a
D657 J0
082
_a
D657 J0
100
_a
Lawson (J L)
245
_a
Thershold singnlas
260
_a
New York
_b
McGraw-Hill
_c
1950
650
_a
Eleectron Engineering
999
_c
30534
_d
30534