000 00253nam a2200121Ia 4500
654 _aMATH
100 _aReddick.H.W.
250 _a3rd Ed.
245 _aDifferential Equations.(1951).
260 _bkognet
_c1954
082 _bRED
999 _c11110
_d11110
300 _c22 cm.
041 _aeng
546 _aText in English