Hierarchical Task Analysis
Health Technology Assessment
Helicopter Training Area
Highway Traffic Act
Hohenfels Training Area
HTML Application
HTML Applications
HyperText Application
half tetrad analysis
Health Technologies Assessment
Health Technology Assessment Database
Heat-Transfer Agent
Heavier-than-Air
Helitrans
hemithioacetal
Heritable Translocation Assay
heteroduplex tracking analysis
heteroduplex tracking assay
heterophil transplantation antigen
High Tech Academy
high temperature alarm
High Threat Area
High-Temperature Alloy
High-Temperature Amorphous
High-Temperature Anneal
High-Temperature Annealing
High-Temperature Approximation
Hirsutellin A
Hollywood Talent Agency
Horizontal test assembly