Management of quality control in the ecological agriculture in Poland

KROCHMAL-MARCZAK, Barbara - DYKIEL, Magdalena - BIENIA, Bernadetta. Management of quality control in the ecological agriculture in Poland. In Hradec Ekonomic Days 2013. 1st ed. 549 s. ISBN 978-80-7435-251-5 (brož.) Hradecké ekonomické dny 2013. Hradec Králové : Gaudeamus, 2013, s. 235-240.