The influence of reduced protein levels in broiler feed on NH3 emissions = : (Invloed verlagen eiwitgehalte in vleeskuikenvoer op de NH3 emisse) /
Middelkoop, J. H. van.
Harn, J. van.
Silsoe Research Institute.
Silsoe : Silsoe Research Institute,
1998.
Includes bibliographical references.