000 00309nam a2200133Ia 4500
008 210901s1972 xx 000 0 eng d
082 _a531.2 LAP
100 _aLapp, Ralph E.
245 0 _aMatter
260 _aHamburg
_bTime-Life International
_c1972
300 _a189
650 _aPhysics
942 _2ddc
_cBK
999 _c9026
_d9026