000 00346nam a2200157Ia 4500
008 210210b xxu||||| |||| 00| 0 eng d
082 _a539/62
100 _aLARSEN (Egon)
245 _aHistory of invention
260 _a
_bNot Mentioned
_c
300 _a382
650 _ainvention
650 _aHistory
690 _aPhysics
906 _a009078
999 _c127829
_d127829