000
00293 a2200133 4500
020
_a
9780335096626
040
_b
udc
100
_a
Erickson B H.
_9
1907
245
_a
Understanding data
250
_a
2ed
260
_b
Open University Press
_c
16 September 1992
300
_b
400 p
942
_c
G
999
_c
4313
_d
4308