Nogmaals de H. Theodorus van der Eem en de familie Wittert / door E.B.F.F. Wittert van Hoogland communications of the "van der waals-fund" method for the measurement of the viscosity of saturated methane-oil solutions under pressure / by J. Versluys, A. Michels and J. Gerver communications of the "van der waals-fund" Calculation of thermodynamic properties of nitrogen up to 3000 atm. between 0ÿê and 150ÿê / by A. Michels, H. Wouters and J. de Boer communications of the "van der waals-fund" suggested explanation for some properties of liquid He II / by A. Michels, A. Bijl and J. de Boer communications of the "van der waals-fund" Isothermsof methane-aethane mixtures at 0ÿê, 25ÿê and 50ÿêC up to 60 atmospheres / by A. Michels and G.W. Nederbragt communications of the "van der waals-fund" Quantum-mechanical calculation of the second virial-coefficient of helium at low temperatures / by J. de Boer and A. Michels Treårskrigen : tegninger på Koldinghus / ved Sigvard Skov Place de Toul : 25e régiment de chasseurs à cheval : rapport de l'inspecteur général wet voor het reserve-personeel der krijgsmacht / door B.C. Mante Instruction sur le combat offensif des unités d'infanterie jusqu'a la brigade / 1re section, Armée Belge incredible patrol : six Americans take a walk behind the German lines in Holland, spend 24 hours, fire two shots and get back with 32 … Allied and National Forces Reunion : Veghel, Holland : 16 - 23 september 1960 : R.G.B.S. / [J.M. Jongeneel]