TY - CPAPER TI - Determination of xanthines by hplc and tlc in horse urine after ingestion of guarana powder PY - 1994 AU - Salvadori, M C AU - Rieser, E M AU - Ribeiro Neto, L M I AU - Nascimento, Elizabeth de Souza T2 - International Symposium on Hormone and Veterinary Drug Residue Analysis J2 - Abstracts PP - Ghent PB - University of Ghent ER -