Vallentine, H.R. Water in the service of man - Penguin Books Middlesex 1967 - 224 - Hydrology Water resources engineering = Vallentine, H.R. Standard No.: M Standard Tech. Report. No.: LCCN: B Nat. Bib. No.: 0684 Nat. Bib. Agency Control No.: 577.4 VAL Subjects--Topical Terms: Environmental Sciences Universal Decimal Class. No.: 577.4