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Cover for A P Barsis · The Use of Measurements in Predicting the Performance of Tropospheric Communication Circuits; NBS Report 6043 (Paperback Book) (2021)

The Use of Measurements in Predi... (2021)

Cover for A P Barsis · Circular of the Bureau of Standards No. 554 (Paperback Book) (2021)

Circular of the Bureau of Standa... (2021)

Cover for A P Barsis · Propagation of Radio Waves Over Land at 1046 MC (report for the Air Navigation Development Board); NBS Report 2494 (Paperback Book) (2021)

Propagation of Radio Waves Over ... (2021)