000
00298nam a2200121Ia 4500
008
210324s1971 xx 000 0 und d
082
_a
517.382
_b
COH/Lin
100
_a
Cohn, P.M.
_9
339509
245
_a
Linear equations.
260
_c
1971
650
_a
NO SUBJECT
_9
339510
700
_a
N.A.
_9
339511
999
_c
280386
_d
280386