TY  - BOOK
AU  - Welcher, Frank J.
TI  - Standard method of chemical analysis
U1  - 543.08 
PY  - 1966///
CY  - New York
PB  - Van Nostrand Reinhold Company
N1  - vol. 3Pt.A: Instrumental methods; vol. 3PtB: Instrumental methods
ER  -