000
00295nam a2200121Ia 4500
008
210901s1972 xx 000 0 eng d
082
_a
517.897 OPE
100
_a
Open University
245
0
_a
Least squares approximation
260
_b
Open University
_c
1972
300
_a
47p.
942
_2
ddc
_c
BK
999
_c
10412
_d
10412