000 00300nam a2200121Ia 4500
008 210212s9999||||xx |||||||||||||| ||und||
082 _a519 Ope. L1
100 _aOpen University
245 0 _aDifferential Equations II
260 _c1971
_bOpen Univesity
_aBletchley
300 _a39P.
942 _cSU
999 _c98445
_d98445