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Authorized headings		Type of heading	Records
Término temático: Nitrificacion see also: Abonos y fertilizantes (Broader heading) Bacterias nitrificantes (Broader heading) Bacteriologia agricola (Broader heading) Bacteriologia de suelos (Broader heading) Inoculacion de suelos (Broader heading) Nitratos (Broader heading) Nitritos (Broader heading) Nitrogeno (Broader heading) Oxidacion (Broader heading) Quimica agricola (Broader heading) Suelos (Broader heading) Tratamiento terciario del agua (Broader heading) Bacterias nitrificantes (Narrower heading) Inoculacion de suelos (Narrower heading)	Details	Término temático	0 records