Instrumentatie in de geodesie / Landmeetkundig Gezelschap "Snellius" [lustrumboekcommissie E.R. Bosman ... et al. ; tek.: J.V.A. Pollen]The application of piecewise polynomials to problems of curve and surface approximation / ed. Kurt Kubik ; contributors: Eric R. Bosman, David Eckhart, Kurt KubikEen concrete invulling van VISIE 1985 / [voorw.: E.R. Bosman]