000
00278n a2200121ua 4500
003
OSt
020
_a
939924112501
040
_c
IIT Kanpur
041
_a
eng
110
_a
Philips Data Handbook
245
0
_a
Electron tubes
_b
tubes for microwave equipment, Feb 1970
942
_c
BK
999
_c
459981
_d
459981