000			00391nam a2200157Ia 4500
008			160615s9999 xx 000 0 und d
100			_aILLUSTRATED ENCYCLOPEDIA OF SCIENCE & TECHNOLOGY
245			_aHow it works. Vol.19
260			_aNew York
260			_bMarshall Cavendish
260			_c1977
300			_a2509-2648 p.
942			_cBooks
999			_c11450 _d11450