Renwick, A.; Ball, A.; Pretty, J.N. (August 2002). "Biological and Policy Constraints on the Adoption of Carbon Farming in Temperate Regions". Philosophical Transactions of the Royal Society A. 360 (1797): 1721–40. Bibcode:2002RSPTA.360.1721R. doi:10.1098/rsta.2002.1028. PMID12460494. S2CID41627741. pp. 1722, 1726–29.
Renwick, A.; Ball, A.; Pretty, J.N. (August 2002). "Biological and Policy Constraints on the Adoption of Carbon Farming in Temperate Regions". Philosophical Transactions of the Royal Society A. 360 (1797): 1721–40. Bibcode:2002RSPTA.360.1721R. doi:10.1098/rsta.2002.1028. PMID12460494. S2CID41627741. pp. 1722, 1726–29.
Renwick, A.; Ball, A.; Pretty, J.N. (August 2002). "Biological and Policy Constraints on the Adoption of Carbon Farming in Temperate Regions". Philosophical Transactions of the Royal Society A. 360 (1797): 1721–40. Bibcode:2002RSPTA.360.1721R. doi:10.1098/rsta.2002.1028. PMID12460494. S2CID41627741. pp. 1722, 1726–29.
Biggers, Jeff (November 20, 2015). "Iowa's Climate-Change Wisdom". New York Times. Archived from the original on November 23, 2015. Retrieved 2015-11-21.
Renwick, A.; Ball, A.; Pretty, J.N. (August 2002). "Biological and Policy Constraints on the Adoption of Carbon Farming in Temperate Regions". Philosophical Transactions of the Royal Society A. 360 (1797): 1721–40. Bibcode:2002RSPTA.360.1721R. doi:10.1098/rsta.2002.1028. PMID12460494. S2CID41627741. pp. 1722, 1726–29.
Biggers, Jeff (November 20, 2015). "Iowa's Climate-Change Wisdom". New York Times. Archived from the original on November 23, 2015. Retrieved 2015-11-21.