Alla,
We have used the following from Mexico:

Sistemas Biblioinforma (the owner has an MLS from the U.S.)
http://www.sibi.com.mx/index.php
sistemas@sibi.com.mx

They are very professional. Although we have only purchased books from them, I know they also handle serials from Mexico, possibly South America as well. I hope this helps,
RH

Rogelio Hinojosa
Associate Librarian
Acquisitions/Serials/E-Resources
Texas A&M International University
Sue & Radcliffe Killam Library
5201 University Boulevard
Laredo, TX 78041-1900

phone: 956-326-2123
fax: 956-326-2399

Rogelio H Hinojosa
Acquisitions Librarian (Associate)
rhinojosa@tamiu.edu
Tel. (956) 326-2123
Fax (956) 326-2399
Killam Library
Texas A&M International University
KL 214C
,

As pursuant to Texas A&M International University rule 33.04.99.L2 concerning the Use and Disposition of Electronic Communications, this email is a mechanism for official communication of the University. Electronic mail (e-mail) should be used only for legitimate academic or state business. Official email communications are intended only to meet the academic and administrative needs of the campus community.-----Original Message-----
From: SERIALST: Serials in Libraries Discussion Forum [mailto:SERIALST@list.uvm.edu] On Behalf Of Alla Amyx
Sent: Thursday, September 10, 2009 8:56 AM
To: SERIALST@LIST.UVM.EDU
Subject: [SERIALST] South American Vendors

Can somebody recommend me a good South American vendor for serials,
please? I am interested in a vendor who covers Colombia, Venezuela and
Mexico, or local vendors from these countries. Does somebody know what
have happened with Esteva? They don't reply to emails and telephone calls.
Are they still in business?

Thank you,

Alla Amyx
Acquisitions Librarian
Serial Records Section
National Library of Medicine
301-496-3782