000
00236 a2200097 4500
082
_a
621.38
_b
Un22
245
1
_a
PROCEEDINGS OF THE NATIONAL CONFERENCE ON TUBE TECHNIQUES
260
_a
_b
_c
1961
964
_g
CIRC
997
_a
8821 v. 5 s C
999
_c
451863
_d
451863