00750nam0-22002771i-450-990000116830403321000011683FED01000011683(Aleph)000011683FED0100001168320011111d--------km-y0itay50------baitay-------001yy1990 CatalogSigma immuno chemicals.St. LouisSigma chemical companycopyr. 1989228 p.28 cmAziende chimicheCataloghi di vendita338.476 61SIGMA IMMUNO CHEMICALSITUNINARICAUNIMARCBK99000011683040332113 N 06 236179FINBCFINBCUNINAING01