publikatie van de atlantische commissie Twee vragen voor de NAVO : verslag van het Atlantisch symposium op 10 april 1970, Tweede Kamer, Den Haag / [voorz.: Th.E.E.H. Mathon] agard advisory report Technical evaluation report on the 13th symposium of the AGARD guidance and control panel on guidance and control displays : held in Paris, October 971 … porton technical paper Self injection devices / by H.W. Whitcher and K.M. Wilson verslag characteristics of craters, formed by explosions in dry sand and water-saturized soils / by W.H.M. van Lange