00416nam a2200133 a 450000500170000000800410001705000240005810000210008224500600010326000450016344000450020865000140025365000150026720140414132059.0100524s19uu xx 00 eng d aREF 608.7bP65 1993 aPollard, Michael aThe illustrated dictionary of inventors and inventions. aWiltshire, UK :bMerlion pub ltd,c1993. aThe illustrated dictionaries of science. aInventors aInventions