Talks by Andrew Revkin 9 Billion People + 1 Planet = ? Andrew Revkin The New York Times Vaclav Smil University of Manitoba October 17, 2009 PIRSA:09100153
9 Billion People + 1 Planet = ? Andrew Revkin The New York Times Vaclav Smil University of Manitoba October 17, 2009 PIRSA:09100153
