Anne Leroy:
well in which to mix cow dung and water
Anne Leroy:
pipe bringing methane to kitchen
Anne Leroy:
cow dung&water left over
Anne Leroy:
stoves using methane from cow dung
Anne Leroy:
light using methane from cow dung
Anne Leroy:
stoves using methane from cow dung
Anne Leroy:
normal gaz container
Anne Leroy:
methane barometer
Anne Leroy:
cow dung to electricity, illustration