000
00275pam a2200109a 44500
082
_a
530.7
_b
N21
100
_a
245
1
_a
NATIONAL PHYSICAL LABORATORY
_b
REPORT FOR THE YEAR 1961
260
_a
_b
Her Majesty'S Stationery Office
_c
1962
964
_g
CIRC
997
_a
52104 C
999
_c
412861
_d
412861