Influence of digestible crude protein reduction and amino acids additive in growing pigs’ diets on their performance and nitrogen balance 1-8 Eugeniusz Ryszard Grela, Edyta Kowalczuk-Vasilev PDF (English)
The level of chinchilla reproductive traits in relation to the behaviour of females 9-16 Brygida Ślaska, Iwona Rozempolska-Rucińska PDF (English)
