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The requested URL /bvs.sld.cu/revistas/spu/vo124_1_98/spu/vol24_1_98.htm was not found on this server.


Apache/2.2.8 (Ubuntu) PHP/5.2.4-2ubuntu5.27 with Suhosin-Patch mod_ssl/2.2.8 OpenSSL/0.9.8g Server at www.scielo.sa.cr Port 80