Studies on feeding system of supplements to lactating cows grazed on grass pasture / Masaaki Hanada. -- Nakashibetsu : Hokkaido Konsen Agric., 1995. -- 66 s. -- (Rep. of Hokkaido prefect. agric. exp. stat. No. 85). -- tab. -- Res. angl. -- ISSN 0367-6048. pasenie dojníc * kŕmenie dojníc