“INTRODUCTION.” Roots of Ecology: Antiquity to Haeckel, by FRANK N. EGERTON, 1st ed., University of California Press, Berkeley; Los Angeles; London, 2012, pp. XI-XIV. JSTOR, www.jstor.org/stable/10.1525/j.ctt1pp2v3.4. Accessed 23 Apr. 2021.
EGERTON, F. (2012). INTRODUCTION. In Roots of Ecology: Antiquity to Haeckel (pp. XI-XIV). Berkeley; Los Angeles; London: University of California Press. Retrieved April 23, 2021, from http://www.jstor.org/stable/10.1525/j.ctt1pp2v3.4
EGERTON, FRANK N. "INTRODUCTION." In Roots of Ecology: Antiquity to Haeckel, XI-XIV. Berkeley; Los Angeles; London: University of California Press, 2012. Accessed April 23, 2021. http://www.jstor.org/stable/10.1525/j.ctt1pp2v3.4.
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