@book{171909,
	author = {Clark, D. S., ed. },
	title = {Análisis microbiológico de los alimentos  /},
	publisher = { Acribia,},
	year = {1973},
	address = {Zaragoza, España  :},
	note = {Título original: Microorganisms in food: their significance and methods of enumeration \ Los ej. 3 y 4 son material fotocopiado}
}