see also: Elf[?] (1971-1976), Rainbow (1974-1979), Black Sabbath (1979-1983; returns 1991) and Dio (1982-present)
Discography:
With Rainbow
With Black Sabbath
With Dio
... In general, photosynthesis requires a source of hydrogen with which to reduce carbon dioxide into carbohydrates. Van Neil's proposal was confirmed 20 years later by ...