000 00324nam a2200121Ia 4500
008 190601s9999 xx 000 0 und d
020 _a_
082 _a510
_bMON
245 0 _aMotion under a central force: MAU 2101 - units 5
260 _a[Colombo]
_bThe Open Univeristy of Sri Lanka
_c1987
300 _a66 p.
942 _cS
999 _c120211
_d120210