"301754049"@en-us . "0"^^ . "301754049"^^ . "perdurable"@en-us . "0"^^ . . "indestructible"@en-us . "01754049-a"^^ . . . . . "durable"@en-us . . . "undestroyable"@en-us . "very long lasting; \"less durable rocks were gradually worn away to form valleys\"; \"the perdurable granite of the ancient Appalachian spine of the continent\""@en-us . "301698956"@en-us . . . "durable"^^ . .