Determination of Crude Protein in Animal Feed, Forage, Grain, and Oilseeds by Using Block Digestion with a Copper Catalyst and Steam Distillation into Boric Acid: Collaborative Study
Nancy J. Thiex Harold Manson Shirley Anderson Jan-Åke Persson
journal of AoAC international Volume: 85 Issue: 2 March 2002 Page(s): 309-317
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http://www.atypon-link.com/AOAC/doi/abs/10.5555/jaoi.2002.85.2.309