Eldredge, Niles.2014-12-092014-12-091971http://dx.doi.org/10.5531/sd.paleo.6http://hdl.handle.net/2246/6566Letter regarding Final version of manuscript, Eldredge and Gould, 1972.enPunctuated equilibria (Evolution)Letter from Eldredge to Dr. Thomas J.M. Schopf, June 21, 1971.Other