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Gruber, Hans and Harteis, Christian and Billett, Stephen (2011) 7. Series editors´ foreword. In: Billett, Stephen and Henderson, A., (eds.) Developing learning professionals. Professional and practice-based learning (7). Springer, Dordrecht, v–vi. ISBN 978-90-481-3936-1(print), 978-90-481-3937-8 (e-book).