The effective field and the frequency of overtones and combination bands in the vibration spectra of crystals von Haas, C., Ketelaar, J.A.A.

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An international bibliography on atomic energy, Vol. I, political, economic and social aspects von Ketelaar, J.A.A.

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General chemistry. An itnroduction to descriptive chemistry and modern chemical theory von Ketelaar, J.A.A.

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General chemistry. An itnroduction to descriptive chemistry and modern chemical theory: by Linus Pauling. Sec. Edition, W. H. Freeman and Comp., San Francisco 1953, 710 pp., 193 fi... von Ketelaar, J.A.A.

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An international bibliography on atomic energy, Vol. I, political, economic and social aspects : Suppl. No. 2, 31 pp.; Vol. II, Scientific Aspects, Suppl. No. 2, 320 pp. Atomic Ene... von Ketelaar, J.A.A.

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Kinetic studies on improved phosphate dental cement: the measurement of some improved dental cements containing phosphate polymers by an electric conductance method von Wiegman-Ho, Lenore, Ketelaar, J.A.A.

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Corrosion rate studies: measurements of corrosion rates of some non-precious dental alloys in artificial saliva von Wiegman-Ho, L., Ketelaar, J.A.A.

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Electrical mobilities in equimolar mixtures of CdCl 2 with NaCl, KCl and CsCl von Kwak, J.C.Th, Ketelaar, J.A.A.

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Materials Science: The Rate of Setting of Zinc Polycarboxylate Dental Cements Investigated by an Electric Conductance Method von Wiegman-Ho, L., Ketelaar, J.A.A.

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Kinetic studies on zinc phosphate dental cement: measurement of the electric conductance of cement during setting von Wiegman-Ho, Lenore, Ketelaar, J.A.A.

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The Kinetics of the Hydration of Calcium Sulfate Hemihydrate Investigated by an Electric Conductance Method von Wiegman-Ho, L., Ketelaar, J.A.A.

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Far-infra-red absorption of non-polar liquids von Michielsen, J., Ketelaar, J.A.A.

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The λ-point transition in NaBH 4: the temperature-variation of the infra-red absorption bands von Ketelaar, J.A.A., Schutte, C.J.H.

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The crystal structure of the ethyl sulphates of the rare earthes and yttrium von Ketelaar, J.A.A.

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Notions élémentaires de chimie générale à la lumière de théories modernes à l'usage des étudiants, des chimistes et des biologistes von Ketelaar, J.A.A.

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Infra-red spectra of compressed gases von Ketelaar, J.A.A.

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The mechanism of the nitrate (platinum) electrode in molten alkali nitrates von Goeting, A.F.J., Ketelaar, J.A.A.

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Electrical mobilities in equimolar mixtures of CdCl2 with NaCl, KCl and CsCl von Kwak, J.C.Th, Ketelaar, J.A.A.

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Notions élémentaires de chimie générale à la lumière de théories modernes à l'usage des étudiants, des chimistes et des biologistes: par P. Pascal, Masson et Cie, Paris 1953, 550 p... von Ketelaar, J.A.A.

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Conductivite electrique du chlorure de sodium fondu et son emploi comme sel de reference a 1000°C von Ketelaar, J.A.A., Maenaut, P.P.E.

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