Specification of William Spencede William SpenceMateriasSewerageUrineSewageFilters and filtrationPhosphatesEdiciones (1)Specification of William Spence (1875)Great Seal Patent Office · inglésMás obras de William SpenceThe Radical Cause of the Present Distresses of the West-India Planters ..1807An Introduction to Entomology on Elements of the Natural History of InsectsAn Introduction to Entomology