000			00375nam a2200157Ia 4500
008			160615s9999 xx 000 0 und d
100			_aHELMHOLTZ (Herman Von)
245			_aPopular lectures on scientific subjects Vol.1
260			_aLondon
260			_bLongmans
260			_c1895
300			_axiv p. + 348
942			_cBooks
999			_c5811 _d5811