title: Factors influencing required dietary nutrient concentrations.
abstract: A review of the genetic and environmental factors that must be considered when forming nutritionally adequate diets for specific laboratory animal colonies.
authors.affiliation: Zeigler Brothers, Inc., Gardeners, PA. Knapka at 19725 Olney Mill Rd., Brookeville, MD 20833.
authors.forename: J J
authors.initials: JJ
authors.lastname: Knapka