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Charles Darwin
Formation of Vegetable Mould [PDF ebook]
Through the Action of Worms, With Observations on Their Habits

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Bìa của Charles Darwin: Formation of Vegetable Mould (PDF)

The share which worms have taken in the formation of the layer of vegetable mould, which covers the whole surface of the land in every moderately humid country, is the subject of the present volume. This mould is generally of a blackish colour and a few inches in thickness. In different districts it differs but little in appearance, although it may rest on various subsoils.

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Ngôn ngữ Anh ● định dạng PDF ● ISBN 9780259615903 ● Nhà xuất bản Forgotten Books ● Được phát hành 2017 ● Có thể tải xuống 3 lần ● Tiền tệ EUR ● TÔI 7316791 ● Sao chép bảo vệ Adobe DRM

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