toekomst van de ondernemingsraad : proeve van de groepsdynamische benadering / E.C.H. Marx, E.H. de Waal unipolaire geleiding van kristaldetectoren / Ma. Joh. Huizinga Nederlandsche Roode Kruis : zijne taak in oorlogs- en in vredestijd / J. de Waal Fotoboek : aangeboden namens de burgerij van Bandoeng, aan den commandant der B.-Divisie, Generaal S. de Waal als klein blijk van de groote waardering voor … communications of the "van der waals-fund" Contribution to the quantum-mechanical theory of the equation of state and the law of corresponding states : determination of the law of force of helium … communications of the "van der waals-fund" Measurements on the dielectric constant of CO2 at 25ÿê, 50ÿê and 100ÿêC up to 1700 atmospheres / by A. Michels and L. Kleerekoper communications of the "van der waals-fund" influence of the interaction of more than two molecules on the molecular distribution-function in compressed gases / by J. de Boer and A. Michels 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 mitteilungen des "van der waals-fonds" Zur Dispersionstheorie des Schalles / A.J. Rutgers 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