000 00261nam a2200097Ia 4500
008 220201s9999 xx 000 0 eng d
100 _aCODDINGTON (EARL A) & LEVINSON (NORMAN)
245 0 _aTHEORY ORDINARY DIFFERENTAL EQUALITIES
260 _bT.M.H
942 _2ddc
999 _c97445
_d97445