00498nam a2200133Ia 4500008004100000082001800041100001400059245009900073260005900172300000800231942000700239952010100246999001700347140113s9999 xx 000 0 und d a543:001.8 L aAnonymous a"Changes in official methods of analysis made at the 86th annual meeting, October 12-15, 1972" a1970bThe Association of Official ChemistscWashington a447 cBK 00104070aVTLbVTLd2014-01-13l0o543:001.8 LpVBK1901r2014-01-13 00:00:00w2014-01-13yBK c58580d58580