Rapid determination of nitrogen in milk and dairy products by colorimetric estimation of ammonia following an accelerated digestion procedure / J. Koops, H. Klomp and R.H.C. Elgersma
Overdr. uit : Neth. milk and dairy journal, 1975 (29)
Rapid determination of nitrogen in milk and dairy products by colorimetric estimation of ammonia following an accelerated digestion procedure