Haemorrhages and Microaneurysms - Medicine (EDAA)
Hapten-Modified Agent (DB)
Hard Magnetic Alloy (SAUS)
Hardware Manufacturers' Association - British (BI)
Hardwood Manufacturers Association (EA)
Harrall-Michalowski Associates, Inc. - Commercial firm
Hawaii Medical Association (BUAC)
Head Masters Association (SAUO)
Head Mirror Assembly (SAUS)
Healthcare Management Advisors, Inc. - Commercial firm
Health Management Associates, Inc. - NYSE symbol (SPSG)
Helicopter Attack Squadron - Military (DOMA)
Hellenic Marketing Association (BUAC)
Heteroduplex Mobility Analysis - Genetics
High Memory Area - Computer science
Highway Memory Address (SAUS)
Hinson Marble Co., Jacksonville, FL - Manufacturer code for watercraft hull identification number (USCG)
Hoist Manufacturers Association - Later, HMI (EA)
Home Manufacturers Association - Later, HMC (EA)
Home Medical Advisor - Schueler Corp.
Home Mission Association - Episcopalian
Homoeopathic Medical Association - United Kingdom (EAIO)
Hondo, TX - Location identifier - FAA (FAAL)
Hop Merchants Association - British (BI)
Host-Mediated Assay (SAUS)
Hot Melt Adhesive
Hot Melt Applicator
Hot Mix Asphalt (SAUS)
Hub Management Architecture (SAUS)
Hybrid Microcircuit Assembly (ACAE)
Hydroponic Merchants Association (EA)
Hydroxymethyladenine - Biochemistry
Hypergol Maintenance Area (MCD)
Hyundai Motor America, Inc.
Marine Attack Helicopter Squadron (VNW)
Marine Helicopter Squadron Attack (NVT)
Southern Mashan Hmong - Language code (ETLW)
Harmona - Record label - Austria
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