Gainey, Percy Leigh. Microbiology of water and sewage - 2 ed. - New York : Prentice Hall, 1952 - 430 p. : ilus. LCCN: 70983 Subjects--Topical Terms: Agua--AnĂ¡lisis.Agua--Bacteriologia.Agua--Purificacion. Dewey Class. No.: 628.16 / G35 1952