"Ryvarden, Leif" . . "Leif" . . . . _:Bb30067275c7e53a91390387065c130da . "Leif Ryvarden" . "1935-"@nl . "Ryvarden" . _:Bb30067275c7e53a91390387065c130da . _:Bb30067275c7e53a91390387065c130da . _:Bb30067275c7e53a91390387065c130da "2023-05-19"^^ . _:Bb30067275c7e53a91390387065c130da . _:Bb30067275c7e53a91390387065c130da . _:Bb30067275c7e53a91390387065c130da "067911927" . _:Bb30067275c7e53a91390387065c130da . _:Bb30067275c7e53a91390387065c130da . _:Bb30067275c7e53a91390387065c130da .