000 00280nam a2200109Ia 4500
008 190829s9999||||xx |||||||||||||| ||und||
100 _aNelkon, M
245 0 _aPrinciples of Physics - Part 2 Heat,Light,And Sound
260 _bChristophers
_aLondon
650 _aPhysics
942 _cBK
999 _c6628
_d6628