Instrument Landing System Integrated Logistics Support Integrated Logistic Support International Launch Services Instrument Landing Systems Integrated Library System Integrated Logistics System International Language Support Internet Locator Service Integrated Learning System Intelligent Library System Intergovernmental Liason Staff Identification Lists Information and Library Services Initial Launch Services Input-buffer Limiting Scheme Interactive Link Suite intermittent light stimulation International labour standards International Latitude Service International Launch Service International Lunar Society International Lyrics Server intracavity laser spectroscopy Ionization Loss Spectroscopy IBM Learning Services Ideal Liquidus Structures idiopathic leucine sensitivity idiopathic lymphadenopathy syndrome Imaginary Lat Syndrome Imaging Line Scanner Immanuel Lutheran School Immediate Line Supervisor immunoliposomes immunolymphoscintigraphy Implementation Letters In Line Scale inbred long-sleep Incident Light Sensor Incoherent-Light System
Instrument Landing System
International Launch Services