TY - GEN PB - Statistical Office in Warsaw L2 - http://www.jbc.bj.uj.edu.pl/Content/232119 KW - mazowieckie voivodship KW - statistical information KW - economic situation T1 - Structural changes of groups of entities of the national economy in REGON register in Mazowieckie Voivodship in 2012 UR - http://www.jbc.bj.uj.edu.pl/dlibra/publication/edition/232119 ER -