Refine My Results

Creation Date 

1. Before 1964  (226)
2. 1964 To 1978  (1,864)
3. 1979 To 1993  (4,277)
4. 1994 To 2009  (22,559)
5. After 2009  (45,069)
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New Records 

1. New From Last Week  (164)
2. New From Last Month  (2,631)
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Subject 

1. Radio Direction-Finding  (56,131)
2. Analogous Arrangements Using Other Waves  (56,131)
3. Radio Navigation  (56,131)
4. Locating Or Presence-Detecting By Use Of The Reflection Orreradiation Of Radio Waves  (56,131)
5. Determining Distance Or Velocity By Use Of Radio Waves  (56,131)
6. Electric Digital Data Processing  (28,297)
7. Electricity  (22,659)
8. Image Data Processing Or Generation, In General  (21,853)
9. Electric Communication Technique  (19,593)
10. Detecting Masses Or Objects  (19,467)
11. Gravitational Measurements  (19,467)
12. Geophysics  (19,467)
13. Presentation Of Data  (18,972)
14. Handling Record Carriers  (18,972)
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Language 

1. English  (69,537)
2. French  (18,674)
3. German  (11,442)
4. Japanese  (2,998)
5. Russian  (706)
6. Norwegian  (259)
7. Swedish  (221)
8. Spanish  (186)
9. Portuguese  (173)
10. Finnish  (163)
11. Danish  (147)
12. Chinese  (115)
13. Italian  (98)
14. Polish  (95)
15. Dutch  (83)
16. Hebrew  (52)
17. Czech  (27)
18. Ukrainian  (24)
19. Hungarian  (13)
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