_:B4bc4545fd926bbbeef73441ee9f1f7f3 . _:B4bc4545fd926bbbeef73441ee9f1f7f3 . _:B4bc4545fd926bbbeef73441ee9f1f7f3 "2023-05-20"^^ . _:B4bc4545fd926bbbeef73441ee9f1f7f3 . _:B4bc4545fd926bbbeef73441ee9f1f7f3 . _:B4bc4545fd926bbbeef73441ee9f1f7f3 "370189388" . _:B4bc4545fd926bbbeef73441ee9f1f7f3 . _:B4bc4545fd926bbbeef73441ee9f1f7f3 . _:B4bc4545fd926bbbeef73441ee9f1f7f3 . _:B4bc4545fd926bbbeef73441ee9f1f7f3 . "Roy F." . "Copper" . "Roy F. Copper" . " pseud. van Glasby, John Stephen"@nl . . "Copper, Roy F." . .