Underground Engineering (Selected Articles), Open PDF Document Details Document Type Technical Report Publication Date Feb 29, 1984 Accession Number ADA139454 Entities People Junqin Zhu Ling Tong Organizations National Air and Space Intelligence Center Tags Communities of Interest Air Platforms Biomedical Energy and Power Technologies Human Systems Weapons Technologies DTIC Thesaurus Topics Air Defense Automobiles Basements Combat Readiness Concrete Construction Conveyors Defense Systems Engineering Excavation Foreign Technology Groundwater Materials Office Buildings Right Angles Underground Structures Vehicles