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Pumping from Wells for Irrigation

Benjamin Yoe MorrisonCarlos Glazier BatesGeorge McMillan DarrowHenry James FranklinNeale Frederick HowardPaul Albert EwingOle Gustav Malde

出版	U.S. Department of Agriculture, 1934
URL	http://books.google.com.hk/books?id=w9N6vgEACAAJ&hl=&source=gbs_api