. . . . . . . . "The highest tree : a play"@en . "The highest tree; a play"@en . . . . "The Highest Tree. A play. [With plates.]"@en . . . . "Stresses the important issue of the scientist's moral and social responsibility." . . . . . "The highest tree, a play" . "The highest tree, a play"@en . "Drama, American." . . "Drama, Promptbooks and typescripts." . .