@inbook {2991,
	title = {Analisi comparata della microfauna del fango attivo di piccoli impianti municipali.},
	booktitle = {Biological approach to sewage treatment process: current status and perspectives.},
	year = {1991},
	note = { Records, Ecol.},
	pages = {83-87},
	publisher = {Centro Luigi Bazzuchi},
	organization = {Centro Luigi Bazzuchi},
	address = {Perugia, Italy},
	author = {Chierichi, E. and Madoni, P.},
	editor = {Madoni, P.}
}
