This is an update request for the document Symmetry and transitivity of conditional relations in monkeys (Cebus apella) and pigeons (Columba livia)
by M. R. D'Amato, David P. Salmon, Eric Loukas and Art Tomie
Your paper was deposited in PubMed Central
and appears online at http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1348159
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