000 00304nam a2200121Ia 4500
100 _aMach, Ermest
942 _cBK
245 _aPopular scientific lectures ; tr by Thomas J McCormack
260 _aChicago
_bOpen Court Publishing Co.
_c1910
082 _a504
_bMac
300 _ax,411
546 _aEnglish
999 _c328910
_d328910
041 _aeng