Human Ecosystems and Technological Change Sixth EditionShirley Ezell, Marcella Norwood, Barbara Stewart · First published 2013Open the Tome
Human Ecosystems Technological ChangeShirley Ezell, Marcella Norwood, Barbara L. Stewart, Katy Greenwood, Consuelo Waight, Peter Bishop, Holly Hutchins · First published 2006Open the Tome
Human ecosystems and technological changeShirley Ezell, Marcella Norwood, Barbara Stewart, Katy Greenwood, Consuelo Waight, Thomas Arcy · First published 2003Open the Tome
