Rehujen rikkipitoisuuksista

by Matti Kreula, Terttu Ettala
Published 1976-07-01

Urinary nitrogen compounds in dairy cows fed urea as the sole or partial source of nitrogen

by Terttu Ettala, Matti Kreula
Published 1976-07-01

On the amino acids in the urine of dairy cows fed urea as the sole or partial source of nitrogen

by Matti Kreula, Terttu Ettala
Published 1977-09-01

Studies on the nitrogen compounds of the faeces of dairy cows fed urea as the sole or partial source of nitrogen

by Terttu Ettala, Matti Kreula
Published 1979-01-01

The effect of sulphur deficiency and sulphur fertilisation on the nitrogen compounds of timothy

by Terttu Ettala, Matti Kreula, Hilkka Tähtinen
Published 1978-03-01

In vitro evaluation of protein digestibility in the abomasum and small intestine of ruminants

by Jouko Setälä, Hanna Väätäinen, Terttu Ettala
Published 1984-09-01