Source:
The American naturalist [Am Nat] 1948 Jan-Feb; Vol. 82 (802), pp. 5-25.Publisher: University of Chicago Press Country of Publication: United States NLM ID: 2984688R Publication Model: Print Cited
Source:
The Quarterly review of biology [Q Rev Biol] 1965 Jun; Vol. 40, pp. 147-75.Publisher: University of Chicago Press Country of Publication: United States NLM ID: 0376515 Publication Model: Print Cited