PDF a Article Wools, Saskia | Sanders, Piet | Eggen, Theo Evaluation of Validity and Validation by Means of the Argument-based Approach 2010 - Franco Angeli Is part of Cadmo : giornale italiano di pedagogia sperimentale. Fascicolo 1, 2010 Permissions Download Copy/paste Printing Download | Copy/paste | Printing EUR 11.00 VAT Excluded Purchase