Birth Of The Soil
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Explains how topsoil is produced from rock, water, air and sunlight over a period of many centuries. Contrasts the productivity of topsoil with subsoil.
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- 16mm Filmography (legacy record) — title, format, sound, genre, description, catalog record, video
- 16mm Filmography editors — creator
Original permalink · Record added 2023-02-28 14:24:09