1. Biofuel: fiscal actions of the EEC Commission;Autrand,1993
2. Photosynthetic and respiratory efficiency;Azcon-Bieto,1993
3. Aspetti macroeconomici e linee di tendenza;Bertelé;Agricoltura e Innovazione,1991
4. Forestry biomass energy and the carbon cycle;Booth,1993
5. Oil from plants;Calvin,1984