Summary Technical Report of Division 17, NDRC. Volume 1. Detection of Land Mines and Sound Ranging Open PDF Document Details Document Type Technical Report Publication Date Sep 30, 1946 Accession Number AD0221602 Tags Communities of Interest Advanced Electronics Biomedical Energy and Power Technologies Ground and Sea Platforms Weapons Technologies DTIC Thesaurus Topics Acoustic Propagation Acoustics Detection Doppler Effect Electromagnetic Fields Material Degradation Processes Materials Laboratories Materials Science Measurement Medical Personnel Ordnance Laboratories Piezoelectric Crystals Range Finding Repetition Rate Telemetry Equipment Test And Evaluation Transducers