communications of the "van der waals-fund" Isotherms of CO2 between 0ÿê and 100ÿê C / G.P. Nijhoff, A.J.J. Gerver S.J. and A. Michels communications of the "van der waals-fund" measurement of the viscosity of gases at high pressures; The viscosity of nitrogen to 1000 atms / A. Michels and R.O. Gibson communications of the "van der waals-fund" Isotherms of nitrogen between 0ÿê and 150ÿê and at pressures from 20 to 80 atm / A. Michels, H. Wouters and J. de Boer mitteilungen des "van der waals-fonds" Über Isothermen des Stickstoffes zwischen 0ÿê and 150ÿê bei drucken bis zu 400 atmosphären / J. Otto, A. Michels und H. Wouters communications of the "van der waals-fund" Isotherms of methane between 0ÿê and 150ÿêC and densities between 19 and 53 amagat (pressures between 20 and 80 atm) / A. Michels and G.W. … communications of the "van der waals-fund" influence of pressure on the electrical resistance of hard drawn gold wire in different stages of annealing and of soft gold wire / A. Michels … communications of the "van der waals-fund" Isotherms of ethylene between 0ÿê and 150ÿê and at pressures from 20 to 270 atm / A. Michels, J. de Gruyter and F. Niesen Soixante jours qui ébranlèrent l'Occident : 10 mai-10 juillet 1940 / par Benoist-Méchin guerre de 70 et la Commune en 1000 images / Michel Lhospice ; collection dirigé par Robin Livio maréchalerie : résumé historique de la ferrure et des progrès accomplis / par M.H. Bouley Verhandeling over eenige bijzonderheden betreffende de werktuiglijke kracht van den stoom / door J.C. van Rijneveld Histoire de l'armée soviétique / par Michel Garder