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1par Petersen Trond, Thissen David, Bock Richard Darrell, Larsen Randy J., Schmitz Bernhard, Tisak John, Meredith William, Clogg Clifford C., Eliason Scott R., Grego John M., Rindskopf David, Erdfelder Edgar, Szabat Kathryn A.
Academic Press 1990Livre -
2Guilford Press cop. 2008Livre