Books by Paul H Barrett
Paul H Barrett
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The Works of Charles Darwin
V. 28: Formation of Vegetable Mould, Through the Action of Worms, with Observations on Their Habits (1881)
Paul H Barrett
Hardcover
Published:
1992
The Works of Charles Darwin
Vol 17: The Various Contrivances by Which Orchids are Fertilised by Insects
Paul H Barrett
Hardcover
Published:
1992