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Author Title Year (up) Publication Volume Pages
Columella, L.J.M. Of husbandry 70 Book 9
Guillemin, A. The Heavens: An Illustrated Handbook of Popular Astronomy 1867
Wallace, A. R. The Malay Archipelago the land of the orang-utan and the bird of paradise: a narrative of travel, with studies of man and nature 1869
Tyndall, J. The Electric Light 1879 Fortnightly review 25 197-216
Siemens, C.W. III. On the influence of electric light upon vegetation, and on certain physical principles involved 1880 Proceedings of the Royal Society of London 30 210-219