00586nam a2200181Ia 450000500170000000800410001703500090005804100080006708200080007510000190008324501180010225000080022026000440022830000150027249000060028750500750029365000360036820260808125331.0260808s9999||||xx |||||||||||||| ||und||  a2140  aENG  a543  aWelcher, F. J. 0aStandard methods of chemical analysis (vol-2 part-A)bindustrial and natural products and noninstrumental methods  a6th  aNew YorkbD. Van Nostrand Companyc1963  axiv + 1282  a2  aAnalytical Chemistry, Chemical Analysis, Laboratory Methods, Reference  aChemistrybAnalytical chemistry