00967nam a2200229Ia 4500 249775 20250711062656.0 010808e2001 pr a gr 000 0 eng d PUCPR 21 T 363.2563 P1238d Padilla Sánchez, José A. Local 261192 Determination of benzoylmethylecgononine and its metabolites in human hair, using solid-phase extraction and gas chromatography with ion trap mass spectrometry by José A. Padilla Sánchez. 2001. x, 125 leaves ill. 29 cm. Typescript. Thesis (M.S.) -- Pontificia Universidad Católica de Puerto Rico, 2001. Bibliography: leaves 119-125. Hair Analysis. Local 107426 Gas chromatography. Local 101353 Cocaine Analysis. Local 74628 Pontificia Universidad Católica de Puerto Rico. Departamento de Química. Local 294940 179473 179473 0 0 ddc 0 T_363_256200000000000_P1238D 0 evpr 92557 10 10 B 2016-05-27 Autor 346803 0 T 363.2562 P1238d 80000002104290 2016-05-27 00:00:00 r:249775 6