000
00260nam a2200121 a 4500
003
EIA
001
5496
942
_0
2
_2
ddc
_c
BK
245
_a
Understanding statistics
260
_c
c1972
008
141112s1972 ck r 000 u spa d
082
_a
519.5
_b
N157u
999
_c
13552
_d
13552