00307nam a2200097Ia 4500008004100000082001900041100001400060245009600074260003100170300000800201140113s9999    xx            000 0 und d  a543:001.8   L7  aAnonymous  a"Change in official melthos of analysis made at the 91st annual meeting October 17-20,1977"  a1977bThe ACACcWashington  a494