TY  - BOOK
AU  - McFadden,William
TI  - Techniques of combined gas chromatography / mass spectrometry: applications in organic analysis 
SN  - 047158388X
U1  - 547.34926 
PY  - 1973///
CY  - New York
PB  - Wiley, 
KW  - QUIMICA ORGANICA
ER  -