Volunteer Work, Informal Learning and Social Action - Duguid, F.; Duguid, Fiona; Guile, David; Livingstone, D.W; Mündel, K.; Daniel Schugurensky; Karsten Mündel; Mündel, Karsten; Schugurensky, Daniel; MÃ¼ndel, Karsten (Brill / Sense, 2013)