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| topsoil (Topsoil is the upper, outermost layer of soil, usually the top 2 inches (5.1 cm) to 8 inches (20 cm). It has the highest concentration of organic matter and microorganisms and is where most of the Earth's biological soil activity occurs. WK Alexander Demidov) | |||
| rich soil layer; fertile soil layer (ПСП Bema) | |||
| top soil (G.O.A.N.) | |||
| плодородный слой почвы: 7 phrases in 5 subjects |
| Energy industry | 1 |
| Gas processing plants | 2 |
| General | 2 |
| Makarov | 1 |
| Sakhalin | 1 |