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Cubanía libre
(Centro de Estudos em Sustentabilidade da EAESP, 2008)
Servicio social en la manufactura de metales "Mademsa"
(Universidad Tecnológica Metropolitana, 1945)
Ubicación: Trab.Social C265 1945 (Biblioteca Padre Felipe Gómez de Vidaurre #1550, Santiago)
Derivative spectrophotometric determination of nitrate in plant tissue
(AOAC INTERNATIONAL, 2003-11)
A derivative spectrophotometric method was developed to determine NO3--N in plant tissues. The method is based on measurement of the first-derivative spectrum of nitrosalicylic acid in basic solution. The nitrosalicylic ...