RT Book, Whole DB /z-wcorg/ DS http://worldcat.org ID 33972291 LA English T1 The structure of learning processes A1 Valsiner, Jaan. A1 Voss, Hans-Georg, PB Ablex Pub. Corp. PP Norwood, N.J. YR 1996 SN 0893919810 9780893919818 1567502539 9781567502534