000 00405nam a2200157Ia 4500
008 230917s9999||||xx |||||||||||||| ||und||
020 _cPON2
040 _e13050
_aMAIN
041 _aEnglish
082 _a515.353 S62I
100 _aSmith, M G
245 0 _aIntroduction to the theory of portal differential equations
260 _aLondon
_bD Van Nostrand
_c1967
300 _ax, 214 p.
942 _cBK
999 _c152243
_d152243