From dung & wood to coal.
From dung & wood to coal.
- [New Delhi, Coal Utilization Council, 1967]
- 60 p. 24 cm.
- Domestic energy series, no. 1 .
sa 68016466 //r83
Fuel--India.
Farm manure--India.
TP317.I4 / F7
631.8/61/0954
sa 68016466 //r83
Fuel--India.
Farm manure--India.
TP317.I4 / F7
631.8/61/0954