Proefonderzoek
type: CreativeWork
type: Book
type: ProductModel
issued: 1971
about: p089774426
about: p078601118
about: p078945801
author: p069224153
language: nl
is part of: p842359753
main entity of page: https://data.bibliotheken.nl/.well-known/genid/4ea9a24038a46eadb48b890a98b926bd
number of pages: 0
label: Proefonderzoek / G.J. de Rook