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http://press.princeton.edu/titles/7051.html
http://www.nndb.com/people/371/000094089/
http://artinafrica.blogspot.com/2007/07/cradle-of-humanity.html
http://palaeoblog.blogspot.com/2006/08/born-this-day-louis-leakey.html
http://en.wikipedia.org/wiki/Image:Lynn_Margulis.jpg http://porpax.bio.miami.edu/~cmallery/150/phts/phts.htm
http://www.geo.umass.edu/faculty/margulis/
http://inventors.about.com/library/weekly/aa041897.htm
http://en.wikipedia.org/wiki/Peanut
http://mandisajoy.com/
http://web2.ccpl.org/prvEmployees/HTML/scienceproject/ScienceWalk/Ernest%20Everett%20Just.html
http://www.hno.harvard.edu/gazette/2005/04.14/15-bioteen.html
http://www.essortment.com/all/edwardjennersm_rmfk.htm
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http://www.britannica.com/EBchecked/topic-art/20691/111178/Red-blood-cells-trapped-in-a-mesh-of-fibrin-threads#default
http://sirismm.si.edu/siris/top_images/acah.top.08_2007.htm
http://www.blackinventor.com/pages/charlesdrew.html
http://www.nndb.com/people/292/000087031/
http://www.library.otago.ac.nz/exhibitions/linnaeus/cabinet7/index.html
http://profiles.nlm.nih.gov/LL/
http://www.nationalacademies.org/history/members/mcclintock.html
http://members.aol.com/chrominfo/
http://en.wikipedia.org/wiki/Cytogenetics
http://www.invitrogen.com/site/us/en/home/support/Research-Tools/Image-Gallery/Image-Detail.2190.html
Holt Biology Book