40 dubbele task problemen / bijeengebr. door M. Niemeijer
type: Book
type: ProductModel
type: CreativeWork
main entity of page: https://data.bibliotheken.nl/.well-known/genid/f1d191464d593f240cdca0b9d21b3320
name: 40 dubbele task problemen
about: p397587937
author: p071608982
language: nl
number of pages: 14
issued: 1962