The area yields for biomass published in the book are 10 times to high. Despite this 10 times to high aera shield had been the superiority of photovoltaic proofen.
Regretfully, this error was only discovered after printing the book autumn 1993. In the mean time is new technology available to use the whole plant. The area yield of this new technology is about 4 times higher than simple pressing oil plants, but still far below the area yield published in the book by mistake.
More worthy of notice, that the book is clearly against biomass and for photovoltaic, even with a 0 to much at the area yield of biomass.