Books, Brochures, and Chapters>Book:  Steinbeck , John and Ricketts , Edward F. (2009-07-08), Sea of Cortez: a Leisurely Journal of Travel and Research, Penguin Books, Retrieved on 2012-06-23

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Scrope , George Poulett (1825), Considerations on volcanos, Phillips, Retrieved on 2012-06-22

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Revelle , Dorfman , Rogers (1997-08-01), Science with a human face, Harvard Univ Pr, Retrieved on 2012-06-21

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Marsh , George Perkins (1864), Man and nature; or, Physical geography as modified by human action, Retrieved on 2012-06-12

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Leopold , Aldo and Schwartz , Charles W. (1989-06-15), A Sand County Almanac, and Sketches Here and There, Oxford University Press, USA, Retrieved on 2012-06-11

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Hooke , Robert (1667), Micrographia: or, some physiological descriptions of minute bodies made by magnifying glasses. With observations and inquiries thereupon, Retrieved on 2012-06-05

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Raymo , Chet (1999-07-15), Natural prayers, Ruminator Books, Retrieved on 2012-04-14

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Norell , Ellison , Paleontology (2005), Unearthing the dragon, Pi Pr, Retrieved on 2012-04-13

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Gingrich , Newt and Maple , Terry (2007-09-24), A contract with the Earth, Johns Hopkins Univ Pr, Retrieved on 2012-03-22

Source Material [books.google.com]

Books, Brochures, and Chapters>Book:  Bush, Vannevar (1969), Science is not enough, Retrieved on 2012-01-28

Source Material [books.google.com]