000
00249nam a2200109Ia 4500
008
220201s1957 xx 000 0 eng d
100
_a
Turnbull, HW
245
0
_a
Theory of equations
260
_b
Oliver & Boyd
_c
1957
300
_a
166
942
_2
ddc
999
_c
71027
_d
71027