Ferreira Indexing specializes in:

• Medical indexing, including cardiology, pharmacology, psychiatry, rheumatology, ophthalmology, oncology, plastic surgery, hematology,  general surgery, pediatrics, obstetrics and gynecology, and many other subspecialties

• Nursing

• Dentistry

• Legal indexing

• Pet care

• History

• Guide books

• Outdoor recreation, such as mountaineering, canoeing, fishing, hiking, and climbing

• Test-preparation manuals for high school and college

• Speech therapy

• Psychology

• Sociology

• Forensics

• Resource conservation

• Economics

• Oil and gas drilling

• Pollution prevention

• Hazardous waste management