Keywords = decibel
| Number of Articles: 2 | ||
| 1 | Utilization Sonic Waves for Birds Controlling in Crops Field | |
| Volume 12, Issue 12, December 2021, Page 919-927 | ||
| A. R. Hamed; W. F. El-Metwally; M. E. El-Iraqi | ||
| 2 | Control the Ambient Noise Level to Increase the Acoustic Efficiency of the Educational Building. | |
| Volume 42, Issue 4, December 2017, Page 13-23 | ||
| Sanaa Abd El-ghany El-dyasty Ahmed; Alaa Mohamed El-Eashy; Asmaa Nasr Eldin Elbadrawy | ||
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