ECONOMIC SITUATION AND PRODUCTIVITY OF THE POLISH PIG HOLDINGS Journal title: Zagadnienia Ekonomiki Rolnej Authors: Zofia Mirkowska, Wojciech Ziętara Subject(s):
ECONOMIC SITUATION AND PRODUCTIVITY OF THE POLISH PIG HOLDINGS Journal title: Zagadnienia Ekonomiki Rolnej Authors: Zofia Mirkowska, Wojciech Ziętara Subject(s):