Spatial variability in development of organic farming in Poland

PIWOWAR, Arkadiusz. Spatial variability in development of organic farming in Poland. In Hradec Economic Days 2011. 1st ed. 325 s. ISBN 978-80-7435-101-3 (brož.) Hradecké ekonomické dny 2011. Hradec Králové : Gaudeamus, 2011, s. 233-238 : 2 tab., 2 grafy.