@book{1633,
	author = {European Seminar for Sanitary engineers (3rd : 1952 : London).},
	title = {Design and operation of septic tanks : proceedings [of the] Seminar held in London, england, 27 October - 1 November 1952.},
	publisher = {World Health Organization,},
	year = {1953.},
	series = {(WHO monograph series ; no. 18).},
	address = {Geneva : }
}