Haku
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The composition of the faecal microbial flora of milking cows on feeds containing urea as the sole or partial source of nitrogen
(Suomen maataloustieteellinen seura, 1980)
Comparison of grass silage utilization by reindeer and sheep 2. Rumen fermentation and rumen microbiota
(Suomen maataloustieteellinen seura, 1982)