Manoukas, A G The availability of niacin in corn, soybean meal and wheat middlings for the hen. [electronic resource] - Poultry science Nov 1968 - 1836-41 p. digital Publication Type: Journal Article ISSN: 0032-5791 Standard No.: 10.3382/ps.0471836 doi Subjects--Topical Terms: Animal FeedAnimalsChickensNicotinic Acids--analysisGlycine max--analysisTriticum--analysisZea mays--analysis