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Wszystkie 2 wydania William Cooley na Paperback Book... Book
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![Cover for William Cooley · Decision-Oriented Educational Research - Evaluation in Education and Human Services (Paperback Book) [Softcover reprint of the original 1st ed. 1986 edition] (2011)](https://imusic.b-cdn.net/images/item/original/768/9789401083768.jpg?william-cooley-2011-decision-oriented-educational-research-evaluation-in-education-and-human-services-paperback-book&class=scaled&v=1570642893)
![Cover for William Cooley · Decision-Oriented Educational Research - Evaluation in Education and Human Services (Hardcover Book) [1986 edition] (1985)](https://imusic.b-cdn.net/images/item/original/013/9780898382013.jpg?william-cooley-1985-decision-oriented-educational-research-evaluation-in-education-and-human-services-hardcover-book&class=scaled&v=1409826522)