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| top soil (Alexander Demidov); topsoil (Topsoil is the upper, outermost layer of soil, usually the top to . It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biological soil activity occurs. wiki , ПРС Alexander Demidov) | |||
| topsoil | |||
| почвенно-растительный слой: 7 phrases in 2 subjects |
| Natural resourses and wildlife conservation | 5 |
| Sakhalin | 2 |