...The steep slopes of the hills, cultivated by the housewives, contribute plenty of grain, such as dourra and Indian corn, besides cassava, ground-nuts or peanuts, and sweet potatoes... 
Henry M. Stanley 「How I Found Livingstone」
... For surely it is not the richwho contribute to patriotism...
Emma Goldman 「Anarchism and Other Essays」
...Every man of ordinary means and intelligence can contribute either money orlabor...
William T. Hornaday 「Our Vanishing Wild Life」
...They offer opportunities for serious study inwhich one cannot only review the facts which others havealready discovered, but also hope to contribute somethingof value to the sum of human knowledge...
Clarence M. Weed 「Butterflies Worth Knowing」
...Shade trees in their pastures, contribute muchto the comfort of sheep, when exposed to a blazing sun...
Richard L. Allen 「Domestic Animals」
...They keep the bowels open, the appetiteand general health good, and contribute largely to the nutrimentof the animal...
Richard L. Allen 「Domestic Animals」
...There are undoubtedly predisposing conditions which contribute toward thedevelopment of the disease; some of these are found in the animal body andothers in the environment...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...Ioras, pied wagtails, pied chats, and wood-shrikescontinue to contribute their not unworthy items to theminstrelsy of the Indian countryside...
Douglas Dewar 「A Bird Calendar for Northern India」
...Its tail is short, and composed of unusually stifffeathers, which in the process of climbing are pressed inwardsagainst the tree, and contribute greatly to its support...
Rev. C. A. Johns 「British Birds in their Haunts」
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