PT Journal AU Bochynski, M Klimek, J Lisowska-Strzepek, K Morzyniec, K Sawicki, M Zielinska, K SO e-Pedagogium PY 2013 BP 43 EP 60 VL 13 IS 2 DI 10.5507/epd.2013.018 DE vocational education; pupils with special educational needs; individual and social barriers ER