David Mackay

A reality check on renewables - David MacKay 18:35
A reality check on renewables - David MacKay TED-Ed 981,281 11 лет назад
Sustainable Energy - Without the Hot Air with David MacKay 1:06:03
Sustainable Energy - Without the Hot Air with David MacKay Harvard University 102,018 14 лет назад
Kanaga Radio Show #007 by David Mackay 1:01:27
Kanaga Radio Show #007 by David Mackay Kanaga Network 203 6 месяцев назад
Carnaval Breve 3:07
Carnaval Breve David Mackay - Topic 23,593