. _:b1217620 . _:b1217619 _:b1217622 . _:b1217619 . . _:b1217620 . _:b1217622 _:b1217621 . "ENVO"^^ . _:b1217623 . _:b1217620 . "ENVO:00002136"^^ . _:b1217622 . _:b1217623 . _:b1217623 . _:b1217619 . "arsenate treated wood"^^ . _:b1217623 . _:b1217621 _:b1217620 . _:b1217621 .