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- sowing machines 4
- sowing of winter wheat 1
- sown meadows 1
- sows 1
- soya bean 1
- soybean 1
- soybeans 1
- space monitoring 1
- specific adhesion 1
- specific pressure 1
- speech culture 2
- speech skills 1
- speech stamps 1
- speech training 1
- speed 2
- speed of sound 5
- spinning crops 1
- spiritual development 1
- spiritual hymn 1
- spiritual unity 1