Individual Retirement Accounts
Individual Retirement Arrangements
Infrared Astronomical Satellite
infrared reflection absorption spectroscopy
Independent Reporting Activities
insulin resistance atherosclerosis study
Imidazoline receptor antisera-selected
Import Risk Analyses
infarct-related arteries
Information Retrieval Advisory Services
Infrared Alerting System
InfraRed Astronomy Satellite
infrared reflection-absorption spectroscopy
Inland Revenue Authority of Singapore
Insulin Resistance and Atherosclerosis Study
Interim Remedial Actions
Interim Removal Actions
Interim Response Actions
Internet Review Arno Schmidt
Internet Routing and Access Service
Item Reduction Activities
Industrial Relations Advisory Service