The effect of chain length of bonded organic phases in reversed phase high performance liquid chromatography von Hemetsberger, H., Maasfeld, W., Ricken, H.

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Pre-column technology in high-performance liquid chromatography for the determination of phenylurea herbicides in water in the presence of their anilines von Goewie, C.E., Kwakman, P., Frei, R.W., Brinkman, U.A.Th, Seshadri, W.Maasfeld T., Kettrup, A.

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Trace Enrichment and HPLC Analysis of Chlorophenols in Environmental Samples, Using Precolumn Sample Preconcentration and Electrochemical Detection von Trippel, P., Maasfeld, W., Kettrup, A.

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Chromatographic investigations of the behaviour of dichlobenil and 2,4,5-T in water during slow sand filtration [Herbicides] von Schmidt, M, Hiltawsky, A, Maasfeld, W, Kettrup, A

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Studies with the aid of high-performance liquid chromatography on the behaviour of metribuzin during water treatment von Maasfeld, W, Dulme, W, Kettrup, A

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Pre-column technology in high-performance liquid chromatography for the determination of phenylurea herbicides in water in the presence of the anilines von Goewie, C.E, Kwakman, P, Frei, R.W, Maasfeld, W, Seshadri, T

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Untersuchungen mit hilfe der hochleistungs-flüssigchromatographie zum verhalten von metribuzin bei einigen wasseraufbereitungsmethoden von Maasfeld, Wolfgang, Dülme, Werner, Kettrup, Antonius

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Uniform principles for safeguarding the health of applicators of plant protection products. (Uniform principles for operator protection) von Lundehn, J.-R. (Biologische Bundesanstalt fuer Land- und Forstwirtschaft, Braunschweig (Germany). Fachgruppe fuer Chemische Mittelpruefung), Westphal, D, Kieczka, H, Krebs, B, Loecher-Bolz, S, Maasfeld, W, Pick, E.-D

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