Учебное видео: разведение трубочника
На видео показаны особенности культивирования трубочника на отходах получаемых в процессе эксплуатации аквариума.
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![Старый Якутск до 1917 г. [4K Video]](https://sun9-25.userapi.com/_n8gi-6FJB63M4CMKXsvAoMfLQp9Fz8I2g9wPg/j9vn4Sl0xIA.jpg)
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