"Botany." . . "Aerial photography in botany." . . "Botany Alaska." . . . . "Geological Survey (U.S.)," . . . "Photo-interpretation of the terrain along the southern part of the Alaska highway" . . . . . . . . "Photo interpretation of the terrain along the southern part of the Alaska Highway" . "Photo interpretation of the terrain along the southern part of the Alaska Highway"@en . "Photo interpretation of the terrain along the southern part of the Alaska highway" . "Photo interpretation of the terrain along the southern part of the Alaska highway"@en . . "Photo interpretation of the terrain along the southern part of the Alaska Highway an application of the combined knowledge and techniques of botany and geology to the phot interpretation of terrain in northern regions"@en . . . . "Photo interpretation of the terrain along the southern part of the Alaska Highway : an application of the combined knowledge and techniques of botany and geology to the phot interpretation of terrain in northern regions"@en . . . . . . . . . . "Mineral resources of Alaska, 1945-46"@en . "Photo interpretation of the terrain along the southern part of the Alaska Highway : an application of the combined knowledge and techniques of botany and geology to the photo interpretation of terrain in northern regions" . . . . . . . . . . . . . . "Aerial photography in soil surveys." . . "Alaska." . .