TY  - BOOK
AU  - Padilla Sánchez,José A.
ED  - Pontificia Universidad Católica de Puerto Rico. 
TI  - Determination of benzoylmethylecgononine and its metabolites in human hair, using solid-phase extraction and gas chromatography with ion trap mass spectrometry
U1  - T 363.2563 21
PY  - 2001///
KW  - Hair
KW  - Analysis
KW  - Local
KW  - Gas chromatography
KW  - Cocaine
N1  - Typescript; Thesis (M.S.) -- Pontificia Universidad Católica de Puerto Rico, 2001; Bibliography: leaves 119-125
ER  -