19 July (Ethiopia ) within release Emperor Haile Selassie and Views goes into circulation Stamp Emperor Haile Selassie and Views face value 40 Ethiopian cent
Stamp Emperor Haile Selassie and Views in catalogues | |
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Michel: | Mi:ET 511 |
Stamp Number: | Sn:ET C90 |
Yvert et Tellier: | Yt:ET A87 |
Stanley Gibbons: | Sg:ET 620 |
Stamp is square format.
Also in the issue Emperor Haile Selassie and Views:
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Stamp Emperor Haile Selassie and Views in digits | |
Country: | Ethiopia |
Date: | 1965-07-19 |
Emission: | Air Mail |
Format: | Stamp |
Face Value: | 40 Ethiopian cent |
Stamp Emperor Haile Selassie and Views it reflects the thematic directions:
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions.