"Willy van Hemert" . "1993"^^ . . . . "Hemert, Willy van (1912-1993)" . "Willy van Hemert" . "heme041" . "van Hemert" . "Willy" . . _:B2867afd7689a28905f9ac839497d1cf6 . "1912"^^ . _:B2867afd7689a28905f9ac839497d1cf6 . _:B2867afd7689a28905f9ac839497d1cf6 "2021-02-08"^^ . _:B2867afd7689a28905f9ac839497d1cf6 . _:B2867afd7689a28905f9ac839497d1cf6 . _:B2867afd7689a28905f9ac839497d1cf6 . _:B2867afd7689a28905f9ac839497d1cf6 . _:B2867afd7689a28905f9ac839497d1cf6 .