. . . . . . "Wild Volatile-oil Plants and their economic importance: 1. black sage ; 2. wild sage ; 3. swamp bay" . "Wild volatile-oil plants and their economic importance I.--black sage : II.--wild sage ; III.--swamp bay"@en . "Wild volatile-oil plants and their economic importance. I. Black sage. II. Wild sage. III. Swamp bay. By Frank Rabak" . . . . . . . . . . "Wild volatile-oil plants and their economic importance I. Black sage; II. Wild sage; III. Swamp bay" . . . . "Wild volatile-oil plants and their economic importance : I.-Black sage ; II.-Wild Sage ; III.-Swamp Bay"@en . . . . .