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	Base de datos	Solicitud de búsqueda	No. de registros
	IFOP	W-subjects= bentonicos	22
	IFOP	Words= ( ab? ) and W-subjects= ( demersales ) and W-language code= heb	0
	IFOP	W-year= 1980->2000 and Words= ( ab? ) and W-subjects= ( demersales )	20
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= crustaceos	407
	USMARC AUT (USM10)	W-subj.= demersales	0
	IFOP	Words= ab? and W-subjects= ( pelagicos )	4
	IFOP	W-subjects= crustaceos + Words= Disponible	312
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= bentonicos	22
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= demersales	530
	Library of Congress	WRD= ( WSU= demersales )	0
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= demersales	530
	USMARC AUT (USM10)	W-subj.= pelagicos	0
	IFOP	Words= ( ab? ) and W-subjects= ( bentonicos ) and W-language code= heb	0
	IFOP	W-subjects= demersales	530
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= demersales	530