Principles, methods, trends, practices and procedures of public health nursing; preventive medicine and medical implications of exposure to toxics; causes, treatment, prevention, and early detection of communicable diseases, chronic diseases, and handicapping conditions; child growth and development and procedures involved in promoting family health; community aspects including community resources and teaching of preventive medicine techniques; the principles of practices of community health, including community resources; maternal, child and adolescent health including complications of pregnancy, congenital and infant abnormalities, genetics, and causes and prevention of child abuse; principles, methods and procedures used in caring for the aged; sociological, psychological, and physical problems affecting the population served; budget development and expenditure control; principles and practices of supervision and training. Mobility-Constant walking; frequent driving; Lifting-Frequent lifting of less than 5 to 30 pounds; Visual Requirements-Constant overall vision, eye-hand coordination; frequent color perception, reading/closeup work, field of vision/peripheral; Dexterity-Constant writing; frequent holding, reaching, grasping, and repetitive motion; Hearing/Talking-Constant hearing normal speech, talking in person, talking on the telephone; frequent hearing on the telephone; Emotional/Psychological Factors-Constant public contact, decision making, concentration; frequent exposure to trauma, grief, death, working alone; Environmental Conditions-Constant exposure to noise; frequent exposure to dirt, dust, smoke, cold,/heat (indoor and outdoor).