Sandip Mandal
532 subscribers
1:32
The Time Express
Sandip Mandal
40 views • 4 years ago
14:03
Beehive briquettes as clean cooking fuel
Sandip Mandal
21K views • 4 years ago
2:27
Most beautiful beach of India (Radhanagar Havelock)
Sandip Mandal
92 views • 6 years ago
1:36
Making biochar
Sandip Mandal
6.4K views • 6 years ago
5:33
briquette
Sandip Mandal
41K views • 6 years ago
3:37
biochar unit
Sandip Mandal
3.6K views • 11 years ago
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