The productive lifetime of sows on two farms from the aspect of reasons for culling
Balogh, Peter, Kapelański, Wojciech, Jankowiak, Hanna, Nagy, Lajos, Kovacs, Sandor, Huzsvai, Laszlo, Popp, Jozsef, Posta, Janos, Soltesz, Angela
Logistics management of the rail connections using graph theory: the case of a public transportation company on the example of Koleje Dolnośląskie S.A.
Sobczak, Paweł, Stawiarska, Ewa, Oláh, Judit, Popp, József, Kliestik, Tomas