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| Form SS-4 Application for Employer Identification Number |
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| SS-4 Instructions |
| Form W-7 (SP) Solicitud de Numero de Identificacion Personal del Contribuyente del Servicio de Impuestos Internos |
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| Form W-9 Request for Taxpayer Identification Number and Certification |
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| W-9 Instructions for the Requestor of Form W-9 |