20 November (Soviet Union, USSR ) within release U.S.S.R. for victims of the flood in Leningrad goes into circulation Stamp Black overprint and surcharge on 1921 Russian stamp (RU 156) face value 3+10 Russian kopek
Stamp Black overprint and surcharge on 1921 Russian stamp (RU 156) in catalogues | |
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Michel: | Mi: SU 262xb |
Stamp is vertical format.
Black overprint and surcharge on 1921 Russian stamp (RU 156).Also in the issue U.S.S.R. for victims of the flood in Leningrad:
Stamp Black overprint and surcharge on 1921 Russian stamp (RU 156) it reflects the thematic directions:
Agriculture is the cultivation and breeding of animals, plants and fungi for food, fiber, biofuel, medicinal plants and other products used to sustain and enhance human life.[1] Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that nurtured the development of civilization. The study of agriculture is known as agricultural science. The history of agriculture dates back thousands of years, and its development has been driven and defined by greatly different climates, cultures, and technologies. Industrial agriculture based on large-scale monoculture farming has become the dominant agricultural methodology.
A flood is an overflow of water (or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are of significant concern in agriculture, civil engineering and public health. Human changes to the environment often increase the intensity and frequency of flooding. Examples for human changes are land use changes such as deforestation and removal of wetlands, changes in waterway course or flood controls such as with levees. Global environmental issues also influence causes of floods, namely climate change which causes an intensification of the water cycle and sea level rise.: 1517 For example, climate change makes extreme weather events more frequent and stronger. This leads to more intense floods and increased flood risk