00545nam a2200193Ia 4500 LDD 181029s9999 xx 000 0 und d 415396352 P 22.99 LDD Jan Van Den Akker Educational design research Jan Van Den Akker London Routledge 2006 xi, 163p. P 22.99 4251 11-02-2008 4172 16-02-2008 F SELECT STRIDE Discount-15 Reqst by : C.R.K.Murthy ddc BK 0 0 ddc 0 0 79939 LDD LDD 0 371.1007 Ed83 063273 2018-11-01 1796.89 2018-11-01 BK 79940 79940