"1994-09-26" . . . . . . . . . "Dumbarton Oaks colloquium on the history of landscape architecture (12 ; 1988 ; Washington, D.C.)"@en . . "1993-12-01" . "Dumbarton Oaks colloquium on the history of landscape architecture (12 ; 1988 ; Washington, D.C.)"@fr . . . . . . . "1988"^^ . . . "12352087"^^ . "1988"^^ . .