000
00275pam a2200097a 44500
082
_a
TR
_b
RI-9359
100
_a
Philip W. Holland
245
1
_a
Mass spectrometer method for determining helium in the part-per million to 10-percent range
260
_a
_b
_c
997
_a
TR6741 C
999
_c
405898
_d
405898