Ruminant nitrogen usagede National Research Council StaffMateriasNitrogen in animal nutritionRuminantsFeeding and feedsAlimentationTECHNOLOGY & ENGINEERINGAgriculture / Animal HusbandryWiederkäuerAzote dans l'alimentation des animauxAnimal HusbandryStickstoffstoffwechselAgricultureNitrogen, metabolismEdiciones (1)Ruminant nitrogen usage (1985)National Academy Press · inglésMás obras de National Research Council StaffInformation technology research, innovation, and E-GovernmentVideo displays, work, and visionPreparing teachers