What does IEF stand for?

Imaging Energy Filter (AAEL)

Indian Educators Federation (NTPA)

Indian Expeditionary Force - British military (DMA)

Information Engineering Facility (CDE)

Institute of European Finance (SAUO)

Instruction Execution Function (NITA)

INTACT - Infants Need to Avoid Circumcision Trauma Educational Foundation - Later, NO-CIRC (EA)

Integral Equation Formulation (PDAA)

Integrated Expansion Force (SAUS)

International Ecumenical Fellowship (SAUS)

International Environment Facility (SAUO)

International Environment Forum (SAUO)

International Equestrian Federation (EAIO)

International Exhibitions Foundation (EA)

International Eye Foundation (EA)

Internet Education Foundation

Interrupt Flip-Flop (SAUS)

Inventory Exchange Format (SAUO)

Isoelectric Focusing - Analytical chemistry

Isoelectric Focusing Experiment (SAUS)

Israel Education Fund

Itala Esperanto-Federacio (SAUO)

Italian Expeditionary Force

It's Esther's Fault - Internet lingo (CHAT)

Joseph Dale, Casselberry, FL - Manufacturer code for watercraft hull identification number (USCG)

Starved Rock Library System, Ottawa, IL - OCLC symbol (OCLC)