Wright, Forrest B.
Rural water supply and sanitation - 2nd ed. - New Delhi Wiley Eastern 1969 - xvi, 347p. : ill., photos., tables - Wiley Eastern University edition .
628.18 / W7
Rural water supply and sanitation - 2nd ed. - New Delhi Wiley Eastern 1969 - xvi, 347p. : ill., photos., tables - Wiley Eastern University edition .
628.18 / W7