Chronicles of the XXX anniversary - WARSAW A portrait of a voivodeship: a city destroyed after the war and a people who came back to rebuild and reconstruct the city of Warsaw. Agriculture: companies such as the state agriculture farm from Mysiadlo and ‘Hortex’ from Gora Kalwaria. The theatre of the Mazovian land and its traveling stage. New plants in Siedlce. Ursus tractors. Plock: not only the ‘Petrochemia’ company. ‘Polish Linen’ from Zyrardow.