Johns, Henry. Erosion studies of pipe lining materials : fifth progress report - Denver, Colo : Bureau of Reclamation, 1984 - 47 p. : ilus. - Rec - Erc - 84-3 . - Rec - Erc - 84-3 . D18-27 LCCN: 69747 Subjects--Topical Terms: Plásticos.TuberĂas.