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	Base de datos	Solicitud de búsqueda	No. de registros
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= demersales + Words= Disponible and W-language code= heb	0
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= crustaceos	408
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= ( demersales ) and W-language code= heb	0
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= demersales	530
	Library of Congress	WRD= ( WSU= crustaceos )	1
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= demersales	530
	IFOP	W-year= ( 1980->2000 ) and W-subjects= ( crustaceos ) and W-language code= heb	0
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= crustaceos	408
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= bentonicos	23
	IFOP	W-subjects= bentonicos	23
	Serial (USM01)	W-Materia= bentonicos	0