67 HDS definitions

Historical Data Server 
Hitachi Data Systems 
Hardware Description Sheet 
HYDRA-SCREW 
Hamilton Depression Scale 
Health Data Systems 
herniated disk syndrome 
High Definition Systems 
High Dispersion Spectrograph 
Historical Diving Society 
Holographic Diffractive Structure 
Hospital Discharge Survey 
Hybrid Decision Support 
Hybrid Dynamic Simulator 
Hypertension in Diabetes Study 
Hamilton Depression Rating Scale 
Hampden Data Services 
Hardware Descrption Sheet 
Hardware Design System 
Hardware Development System 
Hasegawa Dementia Scale 
Hasegawa's dementia rating scale 
Hasegawa's dementia scale 
hay dust suspension 
hay dust suspensions 
hazardous devices school 
Head Set 
head-down suspension 
Health and Demographic Survey 
Health Data Services