000
00275nam a2200109 4500
008
160616s 000 0
245
_a
Differential equations from the algebraic stand point
100
_a
Ritt, J.F
500
_a
B33 G2
942
_c
BK
_2
BK4351
080
_a
517.9 RITT
999
_c
4351
_d
4351