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	Base de datos	Solicitud de búsqueda	No. de registros
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= bentonicos	23
	Serial (USM01)	W-Materia= demersales	0
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= crustaceos	408
	IFOP	W-subjects= ( demersales ) and W-language code= heb	0
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= crustaceos	408
	IFOP	Words= ab? and W-subjects= ( crustaceos )	89
	IFOP	W-year= 1980->2000 and W-subjects= ( bentonicos )	9
	IFOP	W-subjects= crustaceos	408
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= crustaceos	408
	IFOP	W-subjects= crustaceos	408
	IFOP	Words= ab? and W-subjects= ( demersales )	101
	IFOP	W-subjects= demersales	530
	IFOP	W-year= 1980->2000 and W-subjects= ( demersales )	145
	IFOP	W-subjects= demersales	530
	IFOP	Words= ab? and W-subjects= ( demersales )	101
	IFOP	Words= ab? and W-subjects= ( demersales )	101
	IFOP	W-subjects= ( crustaceos ) and W-language code= heb	0
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= demersales	530