00635     2200193   4500001002100000005001500021035002000036008004100056041000700097082001600104090001600120100002000136245011100156250001100267260006800278300003600346650004400382990001500426INLIS00000000000979120240223092405  a0010-0521009791240223                |          |        aen  a543.06/OFF3  a543.06/OFF30 aKenneth Helrich1 aOFFICIAL methods of analysis association of official analytical chemists.- 15th edition /cKenneth Helrich  a15th.-  aArlington :bAssociation of Official Analytical Chemists,c1990  axvii, p. 685-1298: ill.; 29 cm. 4aFOODS -- CHEMISTRY -- CHEMICAL ANALYSIS  a264/BPV/93