共 3 条
[2]
STUDIES ON NUTRITIVE VALUE OF DIET SELECTED BY GRAZING SHEEP .2. SOME SOURCES OF ERROR WHEN SAMPLING OESOPHAGEALLY FISTULATED SHEEP AT PASTURE
[J].
ANIMAL PRODUCTION,
1967, 9
:167-+
[3]
TILLEY J. M. A., 1963, JOUR BRIT GRASSLAND SOC, V18, P104