000 00405nam a2200181Ia 4500
008 210210b1947 xxu||||| |||| 00| 0 eng d
041 _aeng
082 _a539/69
100 _aLUHR (Overton)
245 _aPhysics tells why
260 _aLondon
_bGeorge Allen & Unwin Ltd
_c1947
300 _a387
650 _awhy
650 _atells
650 _aPhysics
690 _aPhysics
906 _a009085
999 _c127833
_d127833