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	Base de datos	Solicitud de búsqueda	No. de registros
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= bentonicos	22
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= bentonicos	22
	USMARC AUT (USM10)	W-subj.= pelagicos	0
	USMARC AUT (USM10)	W-subj.= demersales	0
	IFOP	W-subjects= pelagicos	11
	Ex Libris University	W-Materia= bentonicos	0
	Ex Libris University	W-Materia= pelagicos	0
	IFOP	W-subjects= pelagicos	11
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= demersales	530
	IFOP	Words= ab? and W-subjects= ( demersales )	101
	USMARC Course(USM30)	W-Subjects= crustaceos	0
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= crustaceos	407
	IFOP	Words= ab? and W-subjects= ( pelagicos )	4
	IFOP	W-subjects= crustaceos	407
	IFOP	W-subjects= crustaceos	407
	IFOP	Words= ab? and W-year= ( 1980->2000 ) and W-subjects= ( demersales )	20
	IFOP	Words= ab? and W-year= ( 1980->2000 ) and W-subjects= ( demersales )	20
	IFOP	W-subjects= demersales	530
	IFOP	W-year= 1980->2000 and W-subjects= ( crustaceos )	112