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4. and in: Forage Cell Wall Structure and Digestibility, and (Eds), American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, Inc., Madison, Wisconsin, USA, 1993, p. 315-346.
5. and in: Forage Cell Wall Structure and Digestibility, and (Eds), American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, Inc., Madison, Wisconsin, USA, 1993, p. 83-104.