Simon Easteal, Eric K. van Beurden, Robert B. Floyd, Michael D. Sabath, Continuing Geographical Spread of Bufo marinus in Australia: Range Expansion between 1974 and 1980, Journal of Herpetology, Vol. 19, No. 2 (Jun., 1985), pp. 185-188
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Easteal et al. (1985) studied this question.
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